479results about How to "Avoid structure" patented technology

The invention relates to the technical field of civil engineering structure plate deformation joint connection, and discloses a civil engineering structure plate deformation joint connecting device and a using method thereof.The civil engineering structure plate deformation joint connecting device comprises at least two adjacent concrete plates, and a deformation joint is arranged between the concrete plates; the elastic rubber belt is arranged in the deformation joint, and the elastic rubber belt is arranged in the length direction of the deformation joint and used for connecting the adjacent concrete slabs and providing telescopic connection to adapt to thermal expansion and cold contraction or other deformation of the concrete slabs; the supporting structures are located on the two sides of the elastic rubber belt, and each supporting structure comprises a first supporting plate and a second supporting plate. The elastic rubber belts are arranged in the length direction of the deformation joint, flexible connection can be provided between the concrete slabs, thermal expansion and cold contraction or other displacement deformation of the concrete slabs caused by temperature changes and foundation settlement are effectively absorbed through the design, and therefore the situation that the concrete slabs crack or are unstable in structure is avoided.

The invention, which relates to the technical field of building construction monitoring, discloses a tall template construction safety monitoring system comprising a template data acquisition module, a dynamic load analysis module, an interpolation module, a time window analysis module, an adjacent region comprehensive analysis module and an early warning module. The template data acquisition module collects stress data of a basic area in real time through a sensor network, the dynamic load analysis module dynamically adjusts division of the stress area according to the stress data, the interpolation module performs smoothing processing on the adjusted data, the time window analysis module calculates area stress fluctuation, and the time window analysis module analyzes the area stress fluctuation. The adjacent region comprehensive analysis module evaluates the stress influence of adjacent regions, the early warning module generates risk levels through fuzzy logic, and the construction report generation module is used for recording and generating a safety report; according to the invention, a local dangerous area can be better controlled and accurately positioned, and large-range blind troubleshooting is avoided, so that the safety management efficiency of a construction site is improved.

The invention relates to the technical field of underwater engineering, in particular to an assembly optimization analysis method for modular assembly of an underwater bearing platform, which comprises the steps of modular design of components, establishment of an underwater positioning system, optimization of an assembly sequence, formulation of an underwater assembly process, stress monitoring and analysis, structural optimization analysis after assembly and environmental adaptability evaluation and adjustment. Stress distribution and deformation conditions under different assembly sequences are simulated through a finite element model, the stress condition in the module assembly process is monitored in real time in combination with a sensor, and an assembly strategy is adjusted in time. Furthermore, based on comprehensive collection and analysis of water area environment data, the anti-corrosion, anti-scouring and anti-biological adhesion design of the bearing platform is optimized, and the service life of the bearing platform is prolonged. Through systematic optimization design and real-time monitoring, the assembly precision, the structural stability and the long-term durability of the bearing platform are ensured.

The invention discloses a heat preservation integrated assembly type roof structure and a construction method thereof, and relates to the technical field of building roof structures, the heat preservation integrated assembly type roof structure comprises a supporting frame, a heat preservation layer, a waterproof layer and a concrete protection layer, the supporting frame is fixed to a building main body structure, and the heat preservation layer comprises a plurality of roof panels which are spliced with one another; the roof panel is made of high-strength lightweight concrete, a heat preservation plate is embedded in the roof panel, a fixing structure used for fixing the roof panel is arranged on the supporting frame, the waterproof layer is laid on the heat preservation layer and covers the whole heat preservation layer, and the concrete protection layer is laid on the waterproof layer and covers the whole heat preservation layer. And a gap between the supporting frame and the building main body structure is sealed. The method has the advantages that efficient assembly construction can be achieved, the construction period is remarkably shortened, the field operation amount is reduced, and the construction efficiency is improved.

The invention discloses a boric acid radical substituted and modified ferric sodium pyrophosphate positive electrode material as well as a preparation method and application thereof, and belongs to the field of sodium ion batteries. The method comprises the following steps: S1, adding a boron source into an aqueous solution of ferric sodium pyrophosphate, uniformly mixing to obtain a first solution, and drying to obtain xerogel; and S2, under the protection of inert gas, roasting the xerogel so as to replace part of phosphate radicals with boric acid radicals, thereby obtaining the boric acid radical substituted modified ferric sodium pyrophosphate positive electrode material. Part of phosphate radical groups in sodium ferric phosphate pyrophosphate are replaced with borate radicals, the ion diffusion rate can be increased, the electronic conductivity of the sodium ferric phosphate pyrophosphate positive electrode material is improved, meanwhile, the specific capacity of sodium ferric phosphate pyrophosphate is improved, and the problem that in the prior art, the related sodium ferric phosphate pyrophosphate positive electrode material is poor in electronic conductivity is solved.

The invention relates to the technical field of silicon-based anode materials, in particular to a method for reducing structural deformation and damage in the circulation process of a silicon-based anode. The preparation method comprises the following steps: adopting Ti < 3 > C < 2 > T < x > MXeneamp; the SGC composite material is used as a silicon-based anode active material; the Ti < 3 > C < 2 > T < x > M < X > eneamp; the preparation method of the SGC composite material comprises the following steps: (1) dispersing nano silicon into phenolic resin, then enabling the nano silicon and graphene oxide to be adsorbed and self-assembled to form gel by utilizing a surface charge adsorption effect, and then performing freeze drying, grinding, carbonization treatment and CVD treatment to obtain the SGC composite material; (2) the surface of the SGC composite material is coated with the Ti < 3 > C < 2 > T < x > MXene nanosheets in a vacuum suction filtration mode, and Ti < 3 > C < 2 > T < x > MXene amp is obtained; the invention discloses an SGC composite material.

The invention discloses a steel truss bridge pushing and falling construction method which improves the precision of a pre-assembly stage and ensures that the overall shape and structure of a bridge body meet the design requirements by adopting a laser measuring instrument, high-precision calculation, temperature control and other means. According to the steel truss bridge pushing and falling construction method, advanced walking type pushing equipment is used, parameters and configuration of the equipment are adjusted, the pushing construction efficiency and precision are improved, it is ensured that the bridge body stably and accurately moves to the designed position, and the construction efficiency is improved. According to the steel truss bridge pushing and falling construction method, the measuring point positions are arranged on the bridge body, displacement and deformation are monitored in real time, finite element analysis and equipment adjustment are combined, accurate control in the pushing process is ensured, and structural deformation and displacement deviation in the pushing process are effectively prevented.

The invention discloses a preparation method of a rod-like selenium nano-carrier, and belongs to the technical field of nano-pesticides. The rod-like selenium nano-carrier is formed by converting chitosan modified amorphous selenium (a-Se) into single crystal ash selenium (t-Se). The amorphous selenium is initially spherical, and after chitosan modification, the spherical amorphous selenium is converted into single crystal ash rod-shaped selenium nanoparticles. The length of the rod-like selenium nano-carrier is 590-610 nm, the diameter of the rod-like selenium nano-carrier is 20-25 nm, the effective average particle size of the rod-like selenium nano-carrier is 90-110 nm, the drug loading rate is 39.28% + / -2%, and the encapsulation efficiency is 64.90% + / -3%. In addition, the invention also provides an application of the rod-like selenium nano-carrier in a nano bactericide material.

The invention relates to the technical field of secondary batteries, in particular to a composite material and a preparation method thereof, a negative electrode current collector, a metal battery and an electric device. The composite material provided by the invention comprises an MXene material, and the MXene material comprises a surface functional group; the silver nanoparticles are grown on the surface of the sheet layer of the MXene material in situ; the modified bacterial cellulose comprises bacterial cellulose and oxygen-containing functional groups modified on the surface of the bacterial cellulose; the modified bacterial cellulose is loaded on the surface of the MXene material; wherein the loading mode of the modified bacterial cellulose at least comprises intermolecular interaction between an oxygen-containing functional group of the modified bacterial cellulose and a surface functional group of the MXene material. The composite material provided by the invention has excellent lithium-loving performance, and can delay the formation of lithium dendrites, so that the electrochemical performance of the metal battery can be improved.

The invention discloses a connecting piece of a communication iron tower, and belongs to the field of connecting pieces, the connecting piece comprises a tower body, a maintenance platform is installed on the tower body, a plurality of annularly distributed mounting racks are installed on the maintenance platform, each mounting rack is connected with a communication antenna through a plurality of connecting piece main bodies, each connecting piece main body comprises an upper connecting plate, and a lower connecting plate is installed on the upper connecting plate. A rotating shell is fixedly installed on the lower surface of one end of the upper connecting plate, by arranging a locking piece and a matching sleeve piece, when a second rotating piece is driven to rotate, the second rotating piece can descend along a sliding sleeve at the same time, and then the second rotating piece can push the locking piece; when the locking piece is pushed, the locking piece can be matched with the matching sleeve piece to clamp the surface of the mounting frame so as to achieve fastening, when the communication antenna is blown by wind to swing back and forth, self-locking can be achieved, the faster the airflow changes, the larger the wind power is, connection can be firmer, the loosening probability is reduced, the overhaul frequency is reduced, and the workload of workers is reduced. The use is convenient.

The invention discloses a high-cycle-performance aqueous battery, which comprises an aqueous electrolyte, a negative electrode, a first positive electrode and a second positive electrode, wherein the first positive electrode and the second positive electrode are positioned on two sides of the negative electrode, and a first diaphragm and a second diaphragm are respectively arranged between the first positive electrode and the negative electrode and between the second positive electrode and the negative electrode; the battery is provided with an electromagnetic valve, the electromagnetic valve is electrically connected with the first positive electrode and the second positive electrode to control switching of the positive electrodes in the charging and discharging loop, and every time discharging and charging circulation are completed, the electromagnetic valve switches the electrode connection relation, and the first positive electrode and the second positive electrode are alternately connected into the charging and discharging loop. Switching of the two positive electrodes in the aqueous battery is accurately controlled through the electromagnetic valve, a positive-negative battery structure is formed in real time, the double positive electrodes alternately perform lithium removal-lithium intercalation reaction, excessive Li intercalation or insufficient positive electrode reduction caused by long-term charging and discharging of a single positive electrode is avoided, the structural stability of the positive electrode material is improved, and the service life of the battery is prolonged. The cycle life and the electrochemical performance stability of the aqueous battery are obviously improved.

The invention is suitable for the technical field of welding devices, and provides a welding device for curved surface framework machining, which comprises a regulation and control robot, an assembly frame, an assembly bottom frame, an assembly top frame, a rotary control mechanism, a fixing frame and a welding gun, and further comprises a touch adjustment mechanism, a visual identification module and a reversing mechanism. According to the using method of the welding device for machining the curved-surface framework, by means of the welding device for machining the curved-surface framework, the welding gun is matched with the regulation and control robot, the assembly frame, the rotary control mechanism, the fixing frame, the touch adjustment mechanism, the visual recognition module and the reversing mechanism; the welding device can continuously and uniformly weld the seam of the framework along the outer contour track of the framework in a circumferential rotation mode, it is ensured that the position and shape of a weld joint meet the welding requirement, a welding gun can flexibly adapt to welding of the straight or curved seam of the framework, meanwhile, the continuity and stability of welding operation are ensured, and the welding efficiency is improved. And stress concentration or structural weakness caused by non-uniform welding is avoided.

The aerogel fiberboard with the high aerogel content comprises a laminated composite fiberboard body and aerogel, and the laminated composite fiberboard body comprises a hollowed-out fiberboard body, a hollowed-out-free upper fiberboard body and a hollowed-out-free lower fiberboard body; the laminated composite fiberboard is soaked in the aerogel hydrolysate, so that aerogel grows in hollow gaps of the hollow fiberboard, fiber gaps of the hollow fiberboard, fiber gaps of the hollow-free upper fiberboard and fiber gaps of the hollow-free lower fiberboard; and gaps between the hollowed-out fiberboard and the upper non-hollowed-out fiberboard and gaps between the hollowed-out fiberboard and the lower non-hollowed-out fiberboard are formed. According to the utility model, the latticed hollow-out fiberboard is used as a middle layer, the laminated composite fiberboard with the hollow-out center is manufactured by sewing or bonding the hollow-out-free fiberboards on the upper surface and the lower surface, and then the laminated composite fiberboard with the hollow-out center is immersed into the aerogel hydrolysate, so that the problem that the laminated aerogel fiberboard is easy to layer is solved; meanwhile, the latticed hollow structure can avoid the problem of collapse caused by deformation of the hollow structure in the aerogel compounding process.

The invention belongs to the field of geological research, and discloses a disintegration instrument capable of eliminating water turbidity in the loess disintegration process and a use method thereof, the disintegration instrument comprises a support, a transparent water tank, a camera and a data acquisition device; a water pump is arranged in the transparent water tank; a plurality of stacked filtering water tanks are arranged on the transparent water tank, a seepage hole-containing water pipe is arranged in the filtering water tank on the top layer, and one end of the seepage hole-containing water pipe is connected with a water outlet pipe arranged on a water outlet of the water pump; fully-paved filter cotton is arranged at the bottom of each filter water tank, every two adjacent layers of filter water tanks are connected through a bottom filter type drain pipe, a connected filter water return pipe is arranged on a water blowing port of the bottom filter type drain pipe of the filter water tank at the bottom layer, and the other end of the filter water return pipe is located in the transparent water tank; a tension sensor is arranged on the bracket, a connecting ring is arranged on the tension sensor, a filter screen for bearing a loess sample is arranged on the connecting ring, and the filter screen is positioned in the transparent water tank. And suspended sediment generated by the test can be effectively removed, and the accuracy of data is ensured.

The utility model provides an electroplating device for a cold plate, which comprises a tank body used for accommodating an electroplating solution, and an electroplating device used for electroplating the cold plate, the plurality of anodes are arranged adjacent to the inner side wall of the tank body, and the anodes can be connected with an anode of a power supply; the mechanical arm can move in the horizontal direction and the vertical direction, and the mechanical arm comprises a moving plate; the first motor is arranged on the moving plate, and a first rotating shaft of the first motor downwards penetrates out of the moving plate; the hanging tool comprises a rotating disc and a connecting mechanism rotatably connected to the lower portion of the rotating disc, the rotating disc is connected with a first rotating shaft of the first motor, the connecting mechanism is used for being connected with a cold plate, and the hanging tool can be connected with the negative electrode of the power source. According to the electroplating device for the cold plate, the uniformity and compactness of a plating layer can be improved, and pits of the plating layer are reduced.

The invention discloses a vertical lifting movable bridge which comprises a main beam, a bridge abutment, a support, a pile foundation, a pile leg and a lifting device, the bridge abutment is supported on the foundation through the pile foundation, the support is arranged on the top face of the bridge abutment, the main beam is parked on the support, the pile leg is vertically arranged on the top of the bridge abutment, the bottom end of the pile leg is embedded in the bridge abutment, and the lifting device is arranged on the pile leg in a sliding and sleeving mode. The two ends of the main beam are fixedly connected with lifting devices which can vertically ascend and descend along the pile legs so as to drive the main beam to vertically ascend and descend. The movable bridge has the advantages that the defects that a conventional vertical lifting movable bridge needs to be provided with a huge bridge tower and a complex structure are overcome, the structure is simple, the occupied area is small, and the application range is wide; 2, a lifting mode can be set according to local conditions according to opening requirements of the movable bridge, so that the manufacturing cost is saved; and 3, a lifting assembly in the lifting device adopts a working mode that a hydraulic oil cylinder is pulled, so that the problem of stability of a pressing rod when the oil cylinder is pressed can be avoided, the size and the manufacturing cost of the oil cylinder are reduced, an unfavorable working environment that the oil cylinder is pressed is changed into a favorable working environment that the oil cylinder is pulled, the service life of the oil cylinder can be prolonged, and the maintenance cost is reduced.

The charging port cover electromagnetic lock device suitable for the new energy automobile comprises a charging port box and a charging port cover capable of rotating around a hinge line, a permanent magnet assembly is installed at the front end, and an electromagnetic assembly is arranged on the charging port box. When power is not on, the permanent magnet assembly and the electromagnetic assembly are attracted, and the charging port cover is kept closed. During electrification, the electromagnetic assembly generates a magnetic field which repels the permanent magnet assembly, so that the charging port cover is opened. The charging port box is further provided with a protective cover, a filling groove is formed in the rear end of the protective cover, and the electromagnetic assembly is connected with the containing groove through the terminal interface. And an over-current protector element is arranged in the accommodating groove and is used for heat conduction. And a conduction wire group connected with an external power supply is arranged in the filling groove and is connected in series with the over-current protector element, the terminal interface and the electromagnetic assembly. The resistance of heat generated when the electromagnetic assembly is electrified is increased through the overcurrent protector element, the current intensity is reduced, and heating is reduced. The filling groove is filled with liquefied epoxy resin, and the electromagnetic assembly and the electric connection part thereof are sealed after solidification.

The invention discloses an expressway slope structure in a high-water-level area and a construction method of the expressway slope structure. The technical problem that in the prior art, the reinforcement and drainage effects are poor is solved. The expressway slope structure in the high-water-level area comprises a concrete grid, a slope layer and a slope layer, the first flexible grid is laid on the soil matrix; the porous water guide layer is laid on the first flexible grid; the second flexible grid is laid on the porous water guide layer; the concrete grid is laid on the second flexible grid; the elastic water guide layer is laid on the second flexible grid and is filled in the cavity; the filter layer is laid on the elastic water guide layer; the water plugging layer is arranged above the filtering layer, and a water storage cavity is formed between the water plugging layer and the filtering layer; the drainage mechanism is used for draining the clear liquid filtered by the filter layer in the water storage cavity into the drainage groove; and the fixing mechanism is used for fixing the concrete grid on the soil matrix.

The utility model discloses a net rack lifting support, which belongs to the technical field of building steel structures and comprises a supporting base, a horizontal lifting support is arranged on the supporting base, a vertical guide frame is arranged on the lifting support, a lifter is arranged on the lifting support, and the lifting support is provided with a vertical guide frame. The bottom of the lifter is fixedly connected with the lifting support through L-shaped fixing pressing plates which are symmetrically arranged in four directions, a steel strand passes through the lifter, and a pull rope encoder is arranged on the lifter. According to the device, the tension and the lifting speed of the steel strand are monitored and recorded in real time through the connection of the pull rope encoder and the central control system, so that the accuracy and the controllability of the lifting process are improved, and the safety and the efficiency of construction are ensured; the L-shaped fixed pressing plate provides a stable fixed connecting point for the lifter, the stability of the net rack in the lifting process is ensured, and structural deviation or collapse caused by uneven lifting force or unforeseen circumstances is prevented.

The invention relates to a negative electrode material and a preparation method thereof, and a lithium ion battery, the negative electrode material comprises a porous carbonaceous material and a silicon material, the negative electrode material has a first region located in the central region in the porous carbonaceous material, a second region distributed on the surface of the first region, and a third region distributed on the surface of the second region, the porous carbonaceous material located in the first area has first pores, the porous carbonaceous material located in the second area has second pores, the porous carbonaceous material located in the third area has third pores, at least part of the first pores are communicated with the second pores, at least part of the second pores are communicated with the third pores, and the third pores are communicated with the third pores. At least part of the third pores are communicated with the surface of the negative electrode material, the silicon material is distributed in at least one of the first pores, the second pores and the third pores, the pore diameter of the first pores is 0.1-2.2 nm, the pore diameter of the second pores is 1.8-5 nm, the pore diameter of the third pores is 3-60 nm, and the probability entropy H of the pores in the porous carbonaceous material meets 0.96 gt; hgt; and 0.70%.

The invention relates to the technical field of medical equipment, and discloses a thoracic surgery nursing body position auxiliary device which comprises a bottom frame, a bed plate is installed at the top of the bottom frame, an extension mechanism is arranged in the bed plate, and a damping mechanism is arranged at the bottom of the extension mechanism; the supporting mechanisms are mounted on the two sides of the bottom frame and are used for adaptively unfolding and supporting when the adaptive equipment is expanded; the extension mechanism comprises extension plates, a motor is arranged between the extension plates, a first gear is fixed to the output end of the motor, a second gear is arranged on one side of the first gear, and a two-way threaded column is fixed to the inner wall of the second gear and connected into the extension plates in a threaded mode. Through the supporting mechanism, when the extension plate is used for extension and expansion, it is ensured that the two sides are unfolded at the same time and stably support the use face of the equipment, the overall stability of the equipment is effectively enhanced through the synchronous supporting capacity, the situation that the structure is inclined or unstable due to uneven expansion is avoided, and therefore the safety and durability of the equipment are guaranteed.

The invention relates to the technical field of drill rod clamps, and provides an automatic drilling machine servo mechanical gripper grabbing device which is arranged at the tail end of a mechanical arm and used for grabbing a drill rod and comprises a connecting disc, and one end of the connecting disc is arranged at the tail end of the mechanical arm; one end of each screw is in threaded connection with the connecting disc; the frame body is provided with a mounting disc which is sleeved on the screw, so that the frame body is arranged in a swinging mode relative to the connecting disc. By means of the technical scheme, the problem that in the prior art, an automatic drilling machine cannot adjust the angle of a grabbing device in time according to the angle of a drill rod to be clamped is solved.

The utility model discloses an aluminum alloy girder of a container transportation semitrailer. The aluminum alloy girder comprises a front section structure, a gooseneck structure and a rear section structure, the front section structure and the rear section structure are I-shaped aluminum structures; the gooseneck structure comprises a gooseneck upper wing plate structure and a gooseneck lower wing plate structure; the gooseneck upper wing plate structure comprises an upper wing plate front end part, an upper wing plate arc-shaped part and an upper wing plate rear end part which are connected in sequence; the top surface of the front end part of the upper wing plate is propped against the bottom surface of the front-section upper wing plate, and the bottom surface of the rear end part of the upper wing plate is propped against the top surface of the rear-end upper wing plate; the gooseneck lower wing plate structure comprises a lower wing plate front end part, a lower wing plate arc-shaped part and a lower wing plate rear end part which are connected in sequence; the top face of the front end of the lower wing plate abuts against the bottom face of the front section lower wing plate, and the top face of the rear end of the lower wing plate abuts against the top face of the rear end lower wing plate. Structural structure defects and deformation caused by welding can be reduced, the welding workload is reduced, and compared with a traditional girder, the girder is more reliable and more environmentally friendly.

The invention discloses a coating material for resisting hydrogen embrittlement in a high-temperature environment and a preparation method of the coating material, diffusion and aggregation of hydrogen atoms are effectively inhibited through a multi-layer structural design, and crack propagation and mechanical property deterioration caused by hydrogen embrittlement in the high-temperature environment are remarkably reduced. According to the coating, under the synergistic effect of the composite ceramic layer, the rare earth doping layer and the metal matrix and oxide composite layer, the hydrogen permeation resistance is greatly enhanced, the oxidation resistance and the fatigue resistance are improved, internal stress accumulation is remarkably reduced, and coating falling and structure cracking are effectively prevented. The coating material can provide more reliable long-term stability and mechanical performance under harsh conditions of high temperature, high pressure, corrosive gas and frequent thermal circulation, greatly prolongs the service life of equipment, reduces the maintenance cost, and effectively improves the safety and reliability of operation.

The invention belongs to the technical field of photoinitiators, and particularly relates to an oxime ester photoinitiator and a photopolymerization composition. According to the invention, groups such as thiophene sulfone, thiophene sulfoxide, benzothiophene sulfone, benzothiophene sulfoxide and the like are introduced into the photoinitiator, so that not only is the sensitivity of the photoinitiator improved, but also the solubility of the photoinitiator in a solvent is enhanced.

The invention provides a hydropower station pipeline void detection evaluation and treatment method. The hydropower station pipeline void detection evaluation and treatment method comprises the following steps that 1, a to-be-detected pipeline is evenly divided into a plurality of to-be-detected space areas in the circumferential direction of the to-be-detected pipeline; step 2, setting an inspection path of each to-be-inspected space region for performing rough inspection on the to-be-inspected space region, and determining to obtain a void detection position where a void phenomenon occurs in each to-be-inspected space region; 3, performing fine detection by taking each obtained void detection position as a reference point, and determining to obtain a corresponding void area; 4, calculating the void volume of each void area; 5, calculating the void total volume of each to-be-detected space region according to the calculation result of the step 4; step 6, judging the void degree by using the obtained void total volume; according to the method, the pipeline void condition can be accurately quantified and positioned, and reliable data support is provided for pipeline void treatment.

The invention belongs to the technical field of disease and pest control, and particularly relates to a control mechanism for forestry soil diseases and pests, which comprises a treatment box, the treatment box is internally provided with a high-temperature sterilizing and killing assembly, the high-temperature sterilizing and killing assembly comprises a plurality of groups of L-shaped connecting pipes arranged in the treatment box and a fixed plate fixedly arranged in the treatment box, and the L-shaped connecting pipes are fixedly connected with the fixed plate. According to the fact that the tolerance degrees of different types of diseases and pests to the temperature are different, the temperature can be adjusted, it can be guaranteed that the appropriate temperature enough for killing the diseases and the pests can be accurately set according to the specific disease and pest types, the pertinence and effectiveness of killing are improved, reciprocating killing operation can be achieved, the situation that the local temperature is too high or too low is avoided, and the working efficiency is improved. Therefore, it is ensured that diseases and pests in the whole sterilization area can be subjected to the effective temperature effect, the loose soil structure can make steam permeate into the soil more deeply, it is ensured that the steam can reach a deep area where the diseases and pests possibly hide, and therefore the comprehensiveness and effectiveness of sterilization are improved.

The invention relates to the technical field of buildings, and discloses a recyclable universal back arris and a mounting method.The recyclable universal back arris comprises two back arris bodies and a connecting frame, each back arris body comprises two camber beams, a plurality of connecting plates are welded between the two camber beams, and the connecting frame is connected with the camber beams. The camber beams, the connecting plates and the connecting frames are all made of steel. The ends, close to each other, of the two back ridge bodies are slidably connected to the outer side of the connecting frame, and an adjusting mechanism is arranged in the connecting frame. The back arris is reasonable in design, the back arris is made of steel, the back arris has extremely high strength and bearing capacity, the back arris can be conveniently and rapidly installed through the installed installation mechanism, the installation mode is high in universality, and therefore the back arris can be suitable for different use scenes, cyclic utilization of the back arris is facilitated, and the concept of green construction is met; the length of the back ridges can be adjusted according to needs through the adjusting mechanism, and the flexibility and adaptability of construction are improved.

The application provides a target text generation method and device, electronic equipment and computer program product, and belongs to the field of artificial intelligence. The method comprises the following steps: obtaining a target text writing requirement input by a user, processing the target text writing requirement to obtain a structured writing parameter; generating an initial text outline according to the structured writing parameter, generating a target text outline according to an instruction of the user to the initial text outline; generating corresponding text content according to the target text outline in a chapter order, maintaining a global memory in the generation process, wherein the global memory is used to store structured information of generated chapters; performing consistency checking on a currently generated chapter, and performing a correction operation according to a result of the consistency checking; and splicing and combining the generated chapters into a target text and outputting the target text.

This invention provides a surface acoustic wave (SAW) filter, comprising a piezoelectric layer and interdigitated electrodes. The interdigitated electrodes are disposed on the piezoelectric layer and include at least a first metal layer and a second metal layer stacked together. The first metal layer is made of platinum or an alloy with platinum as the main component, and the second metal layer is made of aluminum or an alloy with aluminum as the main component. By setting the material of the second metal layer to aluminum or an alloy with aluminum as the main component, the uniformity of metal coverage of the electrode structure can be effectively improved, avoiding excessive local resistance or structural defects caused by poor coverage. Setting the material of the first metal layer to platinum or an alloy with platinum as the main component provides reliable support for the second metal layer, reducing the risk of deformation or corrosion of the aluminum layer in subsequent processes. By using a stacked structure of two complementary materials for the interdigitated electrodes, both structural miniaturization and improved overall electrical performance and structural reliability of the interdigitated electrodes are achieved.