139results about How to "Improve coherence" patented technology

The invention discloses a customer voice analysis system based on a large model, and the system comprises a voice data collection and preprocessing module which is used for collecting and preprocessing customer voice data; the voice recognition module is used for recognizing the preprocessed customer voice data; the feature fusion module is used for extracting semantic features of the text data and fusing customer voice data features to generate voice text representation; the large model fine tuning module is used for performing fine tuning on the pre-trained starry fire cognition large model; the semantic analysis and emotion recognition module is used for processing the voice text representation, extracting semantic information, recognizing an emotion state and generating an analysis result; and the dialogue context management module is used for associating customer historical voice data, establishing dialogue context information and updating a voice analysis result. According to the method, the stellate fire cognitive large model and the improved quantitative low-rank adaptation are utilized, and the method has the advantages of high precision, low calculation cost and high intelligent adaptability.

The invention discloses a multi-language translation method and system, and relates to the field of electrical digital data process.The method comprises the steps that cultural feature information and semantic structure information are obtained; splitting the source language text into a plurality of semantic units based on the semantic structure information; retrieving cultural connotation information of which the association degree with the semantic unit is greater than a preset threshold value; determining that the semantic unit is a culture sensitive semantic unit; extracting a target language expression mode based on the cultural connotation information; performing semantic combination on the target language expression mode and standard translation results of other semantic units except the culture sensitive semantic unit in the source language text to obtain a translation result; judging whether the semantic coherence of the translation result meets a preset condition or not; if the preset condition is met, outputting a translation result; and if the preset condition is not met, re-executing the step of semantic combination. The accuracy of the cultural connotation and the emotional color contained in the transmission source language is improved, and then the cultural adaptability of the translation result is improved.

The invention relates to the technical field of information data processing, in particular to a building engineering project data processing system, which comprises a resource demand analysis module, an engineering project-based human resource management and material demand plan, man-hour record and material inventory data collection module, timetable and resource use record arrangement module, resource utilization rate and gap calculation module and a data processing module, a resource status report is generated, and a resource supply status and potential shortage are determined based on the resource status report. According to the invention, through comprehensive data collection and dynamic analysis, the resource management efficiency of the construction engineering project is improved. Updating resource utilization rate and gap information in real time allows for fast and accurate response to resource changes, reducing resource waste and project delay risks. The resource allocation efficiency and the cost simulation ensure that the resource use reaches the optimal economic benefit, and meanwhile, the capability of the project for adapting to uncertain factors is improved. Time conflicts in resource allocation are reduced through risk assessment, and the continuity of project execution is optimized.

The invention relates to the technical field of aluminum substrate processing, in particular to a television backlight aluminum substrate conveying and discharging structure with high stability, which comprises a conveying frame serving as a basic supporting part of the whole conveying structure; the discharging frame is installed on the upper portion of the conveying frame and used for discharging of the aluminum substrates, and a limiting assembly is installed on the inner side of the discharging frame; the conveying mechanism is installed on the inner side of the conveying frame and located below the discharging frame, and kinetic energy is provided for conveying the aluminum substrates; and the discharging mechanisms are mounted on the two sides of the surface of the discharging frame and are symmetrically arranged. According to the discharging device, the limiting assembly is arranged to be matched with the discharging frame, when an aluminum substrate is placed in the discharging frame, limiting plates on the two sides are pushed, then the limiting plates can push connecting rods and first elastic pieces to move, and after the aluminum substrate is located in the discharging frame, the limiting plates can be pushed to clamp and limit the aluminum substrate through the elastic effect of the first elastic pieces; and therefore, the shaking of the device during movement is reduced, and the transportation stability is improved.

The invention discloses a DAS-VSP data coherent noise suppression method and system based on adaptive texture analysis, and the method comprises the steps: respectively calculating vertical and horizontal derivatives and frequency values of effective signals and noise in synthesized DAS-VSP data, calculating the correlation between pixels, drawing a spatial correlation graph, and guiding the selection of a training strategy; expanding a traditional blind spot network into a neighborhood shielding network, rotating input data to construct a plurality of sub-graphs, and performing translation cutting to form a blind neighborhood; a corresponding blind neighborhood shielding strategy is designed, so that the network meets the condition that blind spot network noise pixels are independent; new asymmetric expansion convolution is proposed to ignore the influence of coherent noise; ordinary total variation regularization is expanded into texture total variation regularization, and texture weight factors are calculated according to different texture characteristics of signals and noise to smooth noise reserved signals; and performing a denoising test on the synthetic seismic data and the actual DAS-VSP seismic data, and analyzing a denoising effect through a quantitative index signal-to-noise ratio, structural similarity and a visualization effect.

The invention discloses an optical frequency comb generation device and method based on lithium niobate film waveguide series connection double micro-rings. The device comprises a first bus waveguide, a first annular waveguide, a second annular waveguide and a second bus waveguide which are etched on a lithium niobate film. Wherein one end of the first bus waveguide is a pump light input end, the other end of the first bus waveguide is an auxiliary light input end, the first bus waveguide and the first annular waveguide are mutually coupled, the first annular waveguide and the second annular waveguide are mutually coupled, the second annular waveguide is a soliton cavity, and a temperature regulation and control device is arranged below the soliton cavity. The temperature of the soliton cavity is regulated and controlled to enable the harmonic peak of the soliton cavity to drift, so that the pump light enters a soliton state, the auxiliary light performs power compensation on the soliton state of the pump light, and a soliton optical frequency comb is generated. In combination with auxiliary photo-thermal modulation, the micro-cavity thermal effect is compensated, the soliton stability is improved, and finally a comb-shaped structure spectrum with stable performance, high coherence and high flatness is output from a soliton cavity port.

The utility model provides a bridge connecting device which comprises two cable bridges, top covers are embedded between the tops of the two sides of the inner walls of the two cable bridges, the front face and the back face of one cable bridge are fixedly connected with clamping frames, the front face and the back face of the other cable bridge are fixedly connected with bending clamping plates, and the bending clamping plates are fixedly connected with the clamping frames. Compared with the prior art, the quick connection device has the following beneficial effects that the quick preliminary connection of the two bridges is completed through the clamping connection of the clamping frame and the bending clamping plate, and then the rotating block in the convenient positioning assembly is rotated to drive the long-rod screw to rotate in the threaded holes in the clamping frame and the bending clamping plate; in the dismounting process, the reset spring can exert back thrust on the movable plate to assist the long-rod screw in dismounting, and the long-rod screw cannot fall off from the bridge, so that the connecting position of the bridge can be dismounted or mounted without an external tool, and the connecting convenience of the bridge is effectively improved.

The invention provides a terahertz vortex radiation generation device based on transverse phase shaping. The terahertz vortex radiation generation device comprises an injector, a laser electron beam modulation system and a terahertz radiation section which are arranged in sequence, the femtosecond laser system comprises a femtosecond laser device, a first beam splitting piece and a first reflecting mirror which are arranged in sequence and are parallel to the electron beam transmission axis, and the first beam splitting piece divides femtosecond Gaussian laser pulses from the femtosecond laser device into a first path of femtosecond Gaussian laser and a second path of femtosecond Gaussian laser; the first path of femtosecond Gaussian laser and the injector are sequentially arranged along the light path of the first path of femtosecond Gaussian laser, and the first reflector, the pulse broadening and beam splitting system and the laser electron beam modulation system are sequentially arranged along the light path of the second path of femtosecond Gaussian laser. According to the terahertz vortex radiation generating device, the longitudinal frequency of terahertz vortex beat frequency laser can be adjusted through the spiral phase plate, the transverse orbital angular momentum of terahertz vortex beat frequency laser can be changed through the adjustable delayer, the layout is simple, the tunability is high, and the terahertz vortex radiation generating device is flexible.

The invention belongs to the field of mine unmanned driving virtual scene generation, and discloses a mine unmanned driving virtual scene generation method based on a large model, which comprises the following steps: collecting network information and mine data, fusing the network data and a mine data set, forming a pre-training data set, and obtaining a sample Token; the sample Token is subjected to two stages of pre-training and weight cyclic fine tuning in sequence, feedback correction and cyclic tuning until a final model generated by the mine unmanned driving virtual scene is output; and inputting a to-be-trained unmanned driving algorithm and a required text to the final model, automatically generating a marked mine unmanned driving data set, scoring a data set generation result, feeding back to the weight cycle fine tuning stage, providing a scoring reference for the data set, and performing cycle tuning to obtain a mine virtual generation final model. According to the method, the problems of data shortage, high data labeling cost, insufficient training data diversity, insufficient virtual scene fidelity, high equipment cost and the like of the mine unmanned driving technology are solved.

The utility model relates to the technical field of wastewater treatment, and discloses a multi-stage wastewater treatment device which comprises a shell, a dosing barrel and an aeration tank, one side of the shell is fixedly connected with a motor I, the output end of the motor I is fixedly connected with a conical barrel, the interior of the shell is fixedly connected with a wastewater pipe, the interior of the shell is fixedly connected with a partition plate, and the partition plate is fixedly connected with the dosing barrel. A grating is fixedly connected to the interior of the shell, auger blades are fixedly connected to the outer wall of the conical barrel, an open hole is formed in the conical barrel, and a sludge pipe is fixedly connected to the interior of the shell. According to the utility model, through the cooperation of the shell, the dosing barrel, the stirring blade, the auger blade, the conical barrel, the aeration tank and the air pipe, the problems that the screening mode of a filter screen is relatively single, only a solid-liquid mixture is filtered, and further complete solid-liquid separation work cannot be efficiently performed on sewage and sludge are solved; therefore, the working efficiency of wastewater treatment operation is greatly reduced, and the treatment efficiency of the multi-stage wastewater treatment device is improved.

The invention discloses an anti-explosion scroll compressor, and relates to the technical field of scroll compressors, in particular to a scroll compressor with an anti-explosion function. An explosion-proof junction box assembly is arranged on a compressor body; a junction box of the explosion-proof junction box assembly is in circular projection welding connection with the compressor body; the left side and the lower side of the junction box are provided with cable gland mounting holes, and a cable gland A used for connecting a power cable and a cable gland B used for connecting a protector cable are assembled in the cable gland mounting holes respectively. The wiring T-shaped seat is arranged on the wiring post; a power supply cable penetrates through the cable gland A and then is connected to the wiring T-shaped seat through a bolt; the temperature protector penetrates through the cable gland B and then is placed in the junction box; and an isolation gasket is arranged on the junction box cover and is assembled and tightened with the junction box through an M5 bolt. According to the technical scheme, the problems that a conventional compressor junction box in the prior art is relatively simple in protection, poor in sealing performance, prone to sparking when making contact with metal impurities or liquid, flammable and explosive in a flammable gas environment and the like are solved.

The invention provides an anti-turbulence long-distance pickup method and device and a readable storage medium. In the method, laser generated by a laser is regulated and controlled by a half-wave plate and transmitted light is transmitted and received to realize echo collection; reflected local oscillation light and echoes are processed by a series of optical elements, a digital micromirror device, a wavefront sensor, a deformable mirror and the like and then are subjected to coherent beam splitting in a polarization beam splitter to enter a coherent receiver, a calculation unit processes signals to obtain sound information, and meanwhile, the self-adaptive optical technology is used for resisting turbulence, and the single exposure technology is used for improving the frame rate. The device comprises a laser generation and modulation module, a signal acquisition and conduction module, a signal processing and restoration module, a self-adaptive optical correction module, a frame rate improvement adaptation module and the like. The invention solves the problems of short pickup distance, large turbulence influence and the like in the prior art, realizes long-distance turbulence-resistant pickup, and is suitable for the fields of public safety, criminal investigation and case handling and the like.

The invention discloses an intelligent agricultural unmanned aerial vehicle inspection and data analysis system, which belongs to the field of unmanned aerial vehicle inspection and data analysis systems, and can simultaneously pop up corresponding drug types and dosage information for farmers according to the identified diseased plant types and pest types in a response measure link after pest and disease damage identification. According to the method and the system, a corresponding pesticide sales merchant platform link is established, so that a farmer can perform prevention and control operation in time, a mode of automatically matching a sales merchant link and popping up the sales merchant link to a hand-held terminal by utilizing a block chain technology is utilized, transaction security and traceability are ensured, an intelligent contract is introduced to realize a purchase automation process, transaction efficiency and coherence in a response measure link are improved, and the method and the system are convenient for farmers to perform prevention and control operation. The requirements of modern agriculture on efficient and accurate pest control are met.

The embodiment of the invention provides a numerical control machine tool parameter optimization method, a related device and a program, and the method comprises the steps: obtaining a position instruction at a current moment, and the position instruction at least comprises a feeding speed; setting a following error alarm threshold value at the current moment at least according to the feeding speed at the current moment; and calculating the position following error of the current moment according to the position instruction of the current moment and the actual position, fed back by the machine tool, of the previous moment, and when the position following error of the current moment is larger than a following error alarm threshold value, enabling the machine tool to give an alarm and stop machining. As the following error alarm threshold value is set according to the feeding speed at the current moment, the machine tool cannot give an alarm when the following error is larger than the following error alarm threshold value due to the fact that the feeding speed is too high or too low, the machining continuity of the numerical control machine tool can be improved, and normal operation of the machine tool is guaranteed.

The invention discloses a tensile strength detection device for a finished product prepared from high-performance fibers, and relates to the technical field of high-performance fiber preparation, the tensile strength detection device comprises a base and a first clamping assembly, the top of the base is provided with a rack, the upper part of the rack is provided with a driving assembly, and the first clamping assembly is arranged at one end of the top of the base. When a fiber preparation cloth finished product is placed, after the two ends of the fiber preparation cloth finished product are placed on the tops of lower clamping plates of a first clamping assembly and a second clamping assembly respectively, sliding columns on driving blocks can slide in through grooves of driving plates only by starting hydraulic cylinders, and at the moment, guide columns can guide a lifting plate under limiting of a rack; therefore, the lifting plate can be driven to move downwards and extrude the roller carrier, the upper clamping plate is extruded through the roller carrier, the buffer plate, the buffer spring, the guide rod and the pressing wheel seat in sequence, and the upper clamping plate moves downwards to the lower clamping plate under the guide of the sliding rod, so that the two ends of the cloth are clamped and fixed.

This invention relates to the field of spectroscopic measurement technology, and particularly to a measurement system and method for measuring the concentration of high-temperature combustion gases in aero-engines. The measurement system includes a supercontinuum laser source, a first collimating mirror, a second collimating mirror, a spectrometer, and a computer. The measurement method includes acquiring the actual transmittance spectrum of the high-temperature combustion gases; calculating the theoretical transmittance spectrum of the high-temperature combustion gases; constructing constraints; fitting the actual transmittance spectrum and the theoretical transmittance spectrum into the constraints; and calculating the concentration of the high-temperature combustion gases. The measurement system has a lightweight structure, requiring only holes for mounting the laser emission and absorption devices on the inner wall of the aero-engine casing. The measurement method uses a supercontinuum laser source, which, compared to ordinary lasers used in active gas detection, offers better spatial coherence, a wider spectral adjustment range, and higher intensity, enabling the detection of more types of gases. The method uses a multi-band combustion gas absorption model to solve for the temperature of the high-temperature combustion gases, improving the accuracy of the concentration calculation.

The utility model provides a meal serving machine which comprises a meal serving machine case, an electric lifting clamping plate and a first electric sliding rail, a meal containing device penetrates through one side of the top of the meal serving machine case, an upper cover is fixedly connected to the other side of the top of the meal serving machine case, and the bottom of the meal containing device is communicated with an electric meal serving device. Compared with the prior art, the beneficial effects of the utility model are that: by starting the micro motor inside the electric food-taking device, the output end of the micro motor drives one rake nail shaft to rotate through the coupling, so that one transmission gear can be driven to rotate, and the other transmission gear drives the other rake nail shaft to rotate reversely, and when the two rake nail shafts rotate reversely at the same time, the two rake nail shafts are driven to rotate reversely. The two rake nail shafts rotate reversely at the same time, rice balls formed in the rice container due to extrusion can be scattered while rice is raked out through the rake nails meshed with the two rake nail shafts, and therefore the eating taste of the rice raked by the rice taking machine can be improved.

The invention discloses an electrical circuit troubleshooting training module and method of a training box. The electrical circuit troubleshooting training module comprises a home page interface, a fault setting interface, an assessment interface and a scoring interface. The fault setting interface, the assessment interface and the scoring interface are respectively and correspondingly used for realizing functions of fault setting, assessment and scoring; the home page interface enters a fault setting interface, the fault setting interface enters an assessment interface through a transition interface, and the assessment interface enters a scoring interface through the transition interface; according to the electrical circuit troubleshooting fault training module, fault setting is carried out through the touch screen, so that students can carry out real-time feedback through the display screen during physical operation, and the electrical circuit troubleshooting fault training module has the characteristics of virtuality and reality combination, small size, convenience in operation and powerful functions, so that practical training is more efficient, visual and practical; not only are the problems existing in a traditional teaching mode effectively solved, but also students are supported to repeatedly practice and test anytime and anywhere, and powerful support is provided for electrical talent training.

The invention relates to tunnel safety facilities, and discloses a multi-layer spiral tunnel sight guidance system combining audio and video, comprising a vehicle detection module, a sound broadcast module, and a control module; the vehicle detection module comprises an infrared sensing unit for monitoring the passing of vehicles and a position information unit for storing the installation coordinates of each infrared sensing unit, the control module comprises a voice unit for storing the broadcast content, the control module matches the infrared sensing unit received with the broadcast content in the voice unit, and sends a broadcast instruction carrying the broadcast content to the sound broadcast module; the sound broadcast module comprises a sound generating unit, the sound generating unit is arranged in the vehicle, and the sound broadcast module controls the sound generating unit to broadcast the number of floors of the spiral tunnel where the vehicle is located in real time according to the received broadcast instruction, so as to solve the technical problem that the driver cannot accurately judge the current floor position when driving in the multi-layer spiral tunnel.

The invention relates to the field of gallium oxide production, in particular to a grinding and smashing device for gallium oxide production, which comprises a grinding machine barrel and a steel ball, the head end of the grinding machine barrel is open, the outer side wall of the head end of the grinding machine barrel is in threaded connection with a steel cover, and the steel cover is sleeved with a first clamping sleeve; one side of the first clamping sleeve is connected with vibration equipment; a round hole is formed in the center of the tail end of the mill cylinder; when a steel ball impacts in a mill cylinder and a steel cover, raw materials can be efficiently smashed, the smashed powdery raw materials are ground through cooperation with a grinding disc, and a second electric telescopic rod adjusts and controls the grinding disc to control powder grinding, so that the smashed raw materials can be directly ground; and the ground raw materials are directly collected in cooperation with an air suction pump, the continuity of the crushing and grinding process is improved, and the problem that the tedious process that the crushed raw materials are manually taken out and then ground is avoided.

The invention relates to the field of in-vitro diagnosis automation equipment, in particular to a liquid sucking device and a liquid changing system. A liquid suction device comprises a confluence piece, a first liquid suction assembly, a second liquid suction assembly and a liquid suction driving assembly. The first liquid suction assembly is used for sucking liquid above a first liquid level in the container, and the first liquid suction assembly is communicated with the confluence piece; the second liquid suction assembly is located on the downstream of the first liquid suction assembly and used for sucking liquid above a second liquid level in the container, the second liquid level is lower than the first liquid level, and the second liquid suction assembly is communicated with the confluence piece; the liquid suction driving assembly is in driving connection with the first liquid suction assembly and the second liquid suction assembly so that the first liquid suction assembly and the second liquid suction assembly can sequentially suck liquid in the container and convey the liquid to the confluence piece. The liquid suction device is high in liquid suction efficiency, short in consumed time and capable of improving the instrument testing speed.

The invention relates to the technical field of motor recovery processing equipment, and discloses an efficient disassembling platform for a three-phase motor, which comprises a rack, the rack is slidably connected to the ground through universal wheels, a platform plate and a power mechanism are mounted in the rack, the bottom end of the rack is mounted on the platform plate, the power mechanism comprises an inclined pressing arm, and the inclined pressing arm is connected with the rack through a connecting rod. The power mechanism is used for pushing the inclined pressing arm to press the pressing and cutting assembly so that the pressing and cutting assembly can move horizontally and downwards, one end of the clamping mechanism makes contact with the pressing and cutting assembly, a copper removing mechanism is installed at the other end of the clamping mechanism, the power mechanism comprises a hydraulic cylinder, a main shaft is fixedly connected to one side of the hydraulic cylinder, and a moving block is fixedly connected to one side of the main shaft. And one side of the moving block is fixedly connected with a push rod. The moving block with the inclined pressing arm is driven by the single hydraulic cylinder, horizontal thrust is converted into vertically downward shearing force through cooperation of the inclined faces, and cutting of the exposed copper wire at the end of the motor is completed.

The present invention discloses an automated in-mold labeling equipment for coffee machine shells, including an outflow conveyor line, a loading and unloading manipulator, a reflux conveyor line, a label storage loader and a dewatering outlet mechanism. The label storage loader and the reflux conveyor line are each located on the side of the injection molding machine in the width direction, and the reflux conveyor line also extends along the length direction of the injection molding machine; the outflow conveyor line is arranged along the width direction of the injection molding machine and docked with the reflux conveyor line; the loading and unloading manipulator is straddled on the injection molding machine along the width direction of the injection molding machine, the loading and unloading manipulator takes out the coffee machine shell in the injection mold and places the coffee machine shell on the reflux conveyor line after transferring it to the dewatering outlet mechanism, the loading and unloading manipulator also takes out the label at the label storage loader and buries it in the injection mold; the dewatering outlet mechanism removes the water outlet of the coffee machine shell transferred by the loading and unloading manipulator, and the reflux conveyor line returns the coffee machine shell without the water outlet to the outflow conveyor line; it has the advantages of high efficiency and good continuity between processes.

The invention discloses a water purification treatment device and a purification treatment method, and belongs to the technical field of water treatment. The water purification treatment device comprises a treatment device and a purification device which are communicated with each other, and the bottom of a treatment box of the treatment device is communicated with the bottom of a purification box of the purification device through a connecting pipe; a treatment mechanism is arranged in the treatment box, the treatment mechanism comprises an aeration structure, a stirring structure for stirring bubbles is arranged above the aeration structure, the aeration structure is connected with the stirring structure through a transmission structure, and a liquid inlet hole and a water inlet hole are formed in the top of the treatment box. By adopting the water purification treatment device and the purification treatment method provided by the invention, the problem of poor water purification treatment effect of the existing treatment device can be solved.

This utility model relates to the field of bearing manufacturing technology, specifically a positioning and adjustment device for a robot control box. It includes a base plate, a robot control box mounted on the base plate, and a positioning and adjustment mechanism mounted on the base plate and acting on the robot control box. The positioning and adjustment mechanism includes an L-shaped support frame, a first sliding rod, and a positioning frame. The L-shaped support frame is located on one side of the base plate. The first sliding rod is mounted on the robot control box and slides in cooperation with the vertical side of the L-shaped support frame. The positioning frame slides vertically on the horizontal side of the L-shaped support frame. The bottom of the robot control box slides in cooperation with the base plate. Symmetrical positioning holes are provided on both the bottom of the robot control box and the base plate. Pushing the first sliding rod until the positioning hole on the robot control box aligns with the positioning hole on the base plate, the positioning rod re-inserts into the positioning hole under the action of a second spring. At this time, both the first and second springs extend, and the positioning rod positions the robot control box on the base plate.

The utility model discloses a carton crushing and compressing device, which relates to the technical field of carton crushing and processing equipment, and comprises a base and a crushing box, the bottom of the crushing box is fixedly connected with a plurality of supporting legs, the bottoms of the supporting legs are fixedly connected with the top of the base, and the top of the crushing box is provided with a feed hopper. A discharging groove is formed in the position, close to the bottom, of one side of the smashing box, double smashing mechanisms are fixedly installed inside, outside and at the bottom of the smashing box, a compression box is fixedly installed at the top of the base, the top of the compression box is designed to be open, the compression box is located below the discharging groove, and a compression mechanism is fixedly installed on one side of the outer portion of the smashing box. The compression mechanism is located over the compression box. The paper box crushing and compressing device can effectively solve the problems that in the prior art, the continuity of crushing and compressing processing of paper boxes is poor, and consequently the overall working efficiency of crushing and compressing of the paper boxes is low.

The invention relates to a polyphenyl ether composite material as well as a preparation method and application thereof, and belongs to the technical field of compositions of high-molecular compounds. The flame-retardant polyphenyl ether composite material is prepared from the following components in parts by weight: 38 to 62 parts of polyphenyl ether resin, 18 to 37 parts of polystyrene resin, 8 to 22 parts of flame retardant and 1 to 8 parts of flexibilizer, the total mass concentration of 3, 3 ', 5, 5'-tetramethyl-4, 4 '-biphenyl quinone and 3, 3', 5, 5 '-tetramethyl biphenol in the polyphenyl ether resin is 8 ppm to 30 ppm, and the flexibilizer comprises an ethylene terpolymer and a hydrogenated styrene-butadiene-styrene block copolymer. The flame-retardant polyphenyl ether composite material has the advantages of high flame retardance, high melt flowability and good matte characteristic.

The invention discloses a gallium nitride-based semiconductor purple light laser with a low fast axis divergence angle lower waveguide layer, which sequentially comprises a substrate, a lower coating layer, a lower waveguide layer, an active layer, an upper waveguide layer and an upper coating layer from bottom to top, and is characterized in that the lower waveguide layer is the low fast axis divergence angle lower waveguide layer; the low fast axis divergence angle lower waveguide layer is any one or any combination of InGaN, GaN, InN and AlInGaN; and the peak rate electric field distribution of the waveguide layer under the low fast axis divergence angle has broken line type distribution. The thickness and refractive index change curve of the lower waveguide layer is modulated, so that the light beam is close to the Gaussian beam, the fast axis divergence angle and the cavity surface power density are reduced, the cavity surface load and the substrate mode leakage are reduced, and the optical power, coherence and far-field FFP image quality of the laser are improved.

The utility model relates to the field of film material punching, in particular to dust removal equipment for film material punching, which comprises a base body, an input conveying belt and an output conveying belt are arranged on the base body, a shell is arranged on the output conveying belt, a fan is rotatably mounted in the shell, a second motor is arranged on the shell, and an output shaft of the second motor is connected with the fan. A rotating shell is rotationally installed between the input conveying belt and the output conveying belt, a plurality of electrostatic rollers are rotationally installed in the rotating shell, a first motor is installed on the base body, an output shaft of the first motor is connected with a rotating shaft, and the rotating shaft is coaxially connected with the rotating shell. The rotating shell is driven by the first motor to rotate, the electrostatic roller adsorbing more fluff on the rotating shell is replaced in time, and the problem that the adsorption effect of the electrostatic roller is reduced due to more fluff on the electrostatic roller is solved. Equipment does not need to be shut down in the electrostatic roller replacement process, the equipment working continuity is improved, and the working efficiency is improved.

The utility model relates to the field of air compressors, in particular to a portable air compressor which comprises a shell, a connector, a rotating part, a transmission part, an air pressure shell, an air pressure plate, a sliding rod and a transmission rod. The side face of the shell is connected with the connector. The top of the shell is connected with the air pressure shell. A one-way air outlet valve is arranged on the bottom side surface of the pneumatic shell; the inner wall of the pneumatic shell is slidably connected with the pneumatic plate. The top of the pneumatic plate is connected with the sliding rod; a cover plate is arranged on the top of the air pressure shell, a through hole is formed in the cover plate, the sliding rod penetrates through the through hole of the cover plate, and the end, away from the air pressure plates, of the sliding rod is connected with the transmission rod. Therefore, the device can achieve the effect of stable negative pressure output without using a large gas tank.