179results about How to "Inhibited Diffusion" patented technology

The utility model relates to the technical field of pipeline groove grinding, in particular to a pipeline groove grinding integrated device which comprises a placing table and a moving table, two inserting grooves are formed in one end of the placing table, connecting blocks are installed and inserted into the two inserting grooves, the connecting blocks are fixedly connected to one end of the moving table, and the moving table is fixedly connected with the placing table. A dust cover is fixedly connected to the top end of the movable table, a booster water pump is fixedly installed at the top end of the dust cover, the output end of the booster water pump is fixedly connected with the top end of a spraying head and internally communicated with the top end of the spraying head, a water inlet is formed in one side of the booster water pump, and the spraying head is arranged at the inner top of the dust cover. And a plurality of universal wheels are arranged at the bottom end of the moving table. According to the device, the booster water pump drives the atomizing spray head to form water mist, dust particles generated by grinding are wetted, the dust particles are bonded into large particles through surface tension of water, sedimentation is accelerated, and dust diffusion is effectively restrained.

The application provides a high-stability lignosulfonate-containing aqueous dye inkjet ink and a preparation method thereof, and belongs to the technical field of inkjet inks; the application constructs a repairable dynamic network through synergistic action: anchor copolymer functionalizes the surfaces of particles such as mica by using dopamine units, and the main units provide diol reaction sites; the bridging copolymer connects the particles into a three-dimensional structure by forming reversible borate ester chemical bonds with the diol sites through boronic acid groups; the synergistic action of the two suspends the particles through a gel structure during standing, and ensures long-term storage stability; during printing, the network collapses under shear force, and the viscosity sharply decreases to ensure smooth jet flow; after printing, the network self-repairs, and the viscosity is recovered to control droplet spreading, and finally, the unity of high stability and high printing performance is achieved.

This invention relates to an insulating oil and an oil-paper insulation system containing superhydrophobic nanoparticles, as well as their preparation method and application, belonging to the field of electrical equipment insulation technology. This invention provides an insulating oil containing superhydrophobic nanoparticles, wherein the superhydrophobic nanoparticles are silane-modified nanoparticles, and the nanoparticles include at least one of SiO2, TiO2, and h-BN; the insulating oil includes at least one of mineral insulating oil, synthetic insulating oil, and natural ester insulating oil. This invention achieves the superhydrophobicity of the nanoparticles and good compatibility with the oil phase through silane modification. Adding silane-modified nanoparticles to the insulating oil effectively reduces the water content of the insulating oil and optimizes the interfacial performance of the oil-paper. Combined with the low-temperature, high-efficiency, and uniform rapid impregnation process of this invention, the overall electrical performance and service life of the oil-paper insulation system are significantly improved.

The utility model discloses a dustproof feed filling device relates to feed filling technical field, including the feed tank, the feed tank side is equipped with the fixing frame, the feed tank feeding end is equipped with the material collecting hopper, the feed tank discharge end is equipped with the filling cylinder, the feed tank below is equipped with the support frame, the filling cylinder penetrates the support frame, and the feed bag is fixed through two clamping arms, and the filling cylinder is inserted into the bag, and the connecting place of feed bag and filling cylinder is locked by the limiting hoop, provides the dustproof condition of filling, and this structure ensures that the feed does not receive external interference in the filling process, effectively prevents the fine feed particle from flying and scattering, thereby guarantees the dustproof effect and filling quality of filling operation, through the suction head of air extractor is communicated to the breather groove and carries out the centralized suction, simultaneously, the limiting pressure relief channel built -in in the breather groove guides the airflow, forms the directional airflow path, effectively has restrained the diffusion of the feed particle with the air exhaust, and has improved the dust removal efficiency of air extractor significantly.

The utility model relates to the technical field of handheld drilling machines, and discloses a dust collecting device of a pneumatic handheld drilling machine, which comprises a handheld drilling machine main body, a collecting assembly, a pushing assembly and a positioning assembly, the handheld drilling machine main body is composed of a drilling machine body and a drill bit arranged at the output end of the drilling machine body; the collecting assembly is arranged outside the output end of the drilling machine body. By arranging the collecting assembly and the pushing assembly, the pushing assembly can enable the collecting assembly to be attached to the surface of a wall body when the drill bit rotates and goes deep into the cavity, so that the collecting assembly can fully cover the drill bit, generated dust is prevented from diffusing from the interior of the collecting assembly, and the dust is prevented from entering the cavity through vibration of a vibration motor. And dust accumulated on the edge of the second annular block can be vibrated into the collecting box to be stored, so that the dust is effectively and completely collected, and the influence on personnel is avoided.

The utility model relates to the technical field of medicine spraying machine, concretely to a kind of spraying protective device of agricultural self-propelled medicine spraying machine, including medicine spraying machine equipment, the medicine spraying machine equipment includes rack, control box, medicine box, spraying system and self-propelled mechanism, and the self-propelled mechanism one side and the top inner wall of rack are fixedly installed with protection assembly between, and protection assembly includes the protection top plate fixedly installed in the top inner wall of rack and the L type side guard board fixedly installed in the one side outer wall of self-propelled mechanism, the both ends of L type side guard board are all set up with telescopic slot of L type, and the inner wall of telescopic slot is all inserted with telescopic plate;The utility model forms relatively closed spraying space, effectively blocks the medicine sprayed to adjacent area diffusion, effectively isolates spraying system and self-propelled mechanism simultaneously, reduces the possibility that medicine enters self-propelled mechanism inside, prolongs overall service life, also can flexibly adjust the extension length of telescopic plate according to actual medicine spraying operation needs, changes protection range.

This invention discloses a special consumable for a double-layer cat litter box and its preparation and usage method, relating to the field of pet cleaning products technology. The invention's upper layer of cat litter and lower layer of absorbent and deodorizing granules, through synergistic design of formula and process, form a complete pet excrement treatment system. The upper layer of cat litter is responsible for trapping and encapsulating feces and draining urine, while the lower layer of absorbent and deodorizing granules is responsible for absorbing and treating odors generated by urine and feces. The combined use of these two layers achieves a highly efficient usage mode with automatic urine seepage, direct feces removal, no need for stirring the upper layer, and regular replacement of the lower layer. This significantly simplifies daily maintenance procedures, reduces the labor intensity of pet ownership, and significantly improves the user experience for family pet cat owners.

The application discloses a micro light emitting diode based on polarization orientation difference regulation and a preparation method thereof. The micro light emitting diode comprises a substrate layer, and a plurality of first regions and second regions arranged alternately on the substrate layer; the first region comprises a non-doped nitrogen-polar nitride layer, a first n-type ohmic contact layer and an n-type electrode which are sequentially stacked; the second region comprises a nucleation layer, a non-doped metal-polar nitride layer, a second n-type ohmic contact layer, a multi-quantum well active region, an electron blocking layer, a p-type hole injection layer, a p++-type ohmic contact layer and a p-type electrode which are sequentially stacked; wherein the second region is a light emitting unit of the device, and a mesa structure thereof is defined by wet etching; the first region and the adjacent second region form a homopolar junction in the horizontal direction. By constructing nitride epitaxial structures with different polarities on the same substrate, a lateral carrier migration potential barrier is formed, and at the same time, etching damage is eliminated by wet etching, so that side wall non-radiative recombination is avoided.

The utility model discloses a photovoltaic assembly with reflective bus bars, which belongs to the field of photovoltaic technology and comprises a plurality of bus bars and a plurality of battery pieces, and the plurality of bus bars and the battery pieces are electrically connected with each other and packaged between a front cover plate and a rear cover plate. The light receiving surface of the bus bar is coated with an adhesive, the surface of the adhesive is uneven, and a plurality of reflective metal particles are fixedly connected through the adhesive. According to the utility model, the light-receiving surface of the bus bar is coated with the adhesive and fixedly connected with the reflective metal particles to form the concave-convex reflective structure, so that compared with the existing embossed V-shaped groove scheme, the bus bar has the advantages that the conductive sectional area is prevented from being damaged by embossing, and the current-carrying capability is ensured; thick adhesive film filling is not needed, and the packaging cost is reduced; the concave-convex structure is combined with the reflective particles through the adhesive, thereby enhancing the diffuse reflection of sunlight, improving the light receiving ratio of the cell, improving the power of the assembly, and avoiding the risk of assembly failure caused by the direct contact between the bus bar and the glass.

The application discloses a serological method for identifying Brucella A19-DeltaVirB12 vaccine immunized animals and infected animals, and belongs to the technical field of veterinary vaccine detection, comprising the step of identifying the antibodies of the serum by using the NH-AGID method. The method helps to perfect the animal Brucella A19-DeltaVirB12 vaccine prevention and control technical system, makes up for the short board that the A19-DeltaVirB12 vaccine immunized animals cannot be identified, and provides technical support for realizing the precise prevention and control of bovine brucellosis. The application of the method will accelerate the application of the Brucella A19-DeltaVirB12 vaccine to replace the traditional A19 vaccine, and opens a new milestone for the prevention and control of Brucella.

The invention relates to the technical field of brake disc materials, and discloses a brake disc material prepared from a carbon-ceramic composite material and a processing technology thereof.The processing technology comprises the following steps that phenolic resin, carbon powder, metal oxide, composite carbon fibers and a pore forming agent are evenly mixed and then placed in a mold, and a composite material prefabricated body is obtained through compression molding and cold water demolding; processing the composite material preform to form a carbon-ceramic brake disc rough blank, and then performing carbonization treatment to obtain a carbonized composite material; and mixing the carbonized composite material with silicon powder, carrying out siliconizing treatment, soaking in a protective solution, sintering, taking out, polishing and perforating to obtain the brake disc material prepared from the carbon-ceramic composite material. The composite carbon fiber contains a large number of silicon hydroxyl groups and can be tightly combined with phenolic resin, carbon powder, metal oxide and a pore-forming agent, and the polycarbosilane layer generates a nanoscale silicon carbide phase, so that the mechanical property and wear resistance of the brake disc material prepared from the carbon-ceramic composite material can be improved.

This invention relates to the field of energy storage system control technology, and discloses an intelligent control and power regulation method for a string-type grid-connected energy storage system, comprising: S1, acquiring grid status and mode-defined demand; S2, acquiring cluster-level topology mapping; S3, collecting cluster state variables of each energy storage cluster; S4, determining capacity estimates and uncertainty metrics, and shrinking or correcting capacity boundary terms; S5, performing inter-cluster collaborative allocation based on support demand and available capacity to obtain support shares; S6, mapping control parameters and controlling converters; S7, event-triggered reconfiguration and reallocation. By introducing a safe availability capacity assessment mechanism based on cluster-level capacity estimation, uncertainty metrics, and boundary shrinkage, the method achieves precise on-demand supply of grid support while meeting current, voltage, and temperature constraints, significantly reducing the risks of overload, exceeding limits, and misjudgment, and improving system safety and support effectiveness.

The application is suitable for the technical field of data processing, and provides a negative feedback monitoring method applied to media data, which comprises the following steps: step S1: media data collection and fusion: collecting media data and user interaction behavior data from different channels, and constructing a unified user session sequence model to time-correlate multi-modal data within a single user session; step S2: multi-modal negative feedback feature fusion: processing the media data, extracting negative feedback features of text, vision, audio and user behavior modes, and analyzing the correlation between different modal negative feedback features by using a cross-modal correlator. The application effectively avoids the problem of cross-session data fragmentation by limiting the operation range of the user session sequence model to a single continuous access period.

This invention belongs to the field of test probe fabrication technology, specifically a method for preparing a special coating for spring probes. The method includes: depositing a Si gradient transition layer on the surface of a spring substrate, followed by oxygen plasma activation treatment to form a specific active pinning layer of 3 to 5 nanometers; then depositing a DLC coating using a specific process, employing a specific peak voltage and a specific duty cycle pulse bias mode to pre-position dispersed carbon clusters. The SixOy pinning layer provides dual anchoring of chemical bonding and mechanical interlocking for the DLC coating during cyclic stress-induced graphitization transformation, preventing microcracks from propagating to the interface and ensuring the safe operation of the adaptive lubrication process. This invention overcomes the technical bottleneck of fatigue spalling of DLC coatings on elastic components, significantly improving the service life of spring probes.

The application discloses an abnormal driving behavior recognition method and system based on multi-modal data fusion, and particularly relates to the technical field of multi-vehicle cooperative driving safety control, and is used for solving the problem that the existing cooperative driving system cannot convert the abnormal behavior risk of a driver into a cooperative control instruction at the vehicle fleet level; the abnormal state of the driver is recognized by collecting and fusing multi-modal sensor data of the vehicle; when the vehicle is a lead vehicle of a vehicle fleet, the comprehensive risk of the abnormal state to the safety of the vehicle fleet is evaluated based on the abnormal state through probabilistic evolution simulation; the expected effect of different vehicle fleet control strategies is simulated according to the risk evaluation result, and the best strategy is selected; vehicle fleet risk information containing the strategy is generated and sent to all following vehicles through vehicle-to-vehicle communication; the whole process from single-vehicle driver state monitoring to vehicle fleet level cooperative risk prevention and control is realized, and the overall safety of the vehicle fleet system is improved.

The utility model discloses a diaphragm and a battery, the diaphragm comprises a diaphragm main body and a polytetrafluoroethylene layer arranged on at least one side of the diaphragm main body, and the thickness of the polytetrafluoroethylene layer is 0.01-0.10 mm. In the embodiment, the polytetrafluoroethylene layer is arranged on the diaphragm main body, and the compact structure of the polytetrafluoroethylene layer is distributed on the surface of the diaphragm main body, so that the puncture resistance of the diaphragm main body is enhanced. Therefore, the diffusion of zincate ions can be effectively inhibited, and oxygen generated by the positive electrode during charging can be ensured to smoothly reach the zinc negative electrode for reduction reaction. Besides, due to the arrangement of the polytetrafluoroethylene layer, the diaphragm is endowed with certain hydrophobicity, so that the electrolyte is stably adsorbed in the diaphragm, and the service life of the battery is remarkably prolonged.

The invention discloses a PIN photoelectric detector based on epitaxial Ge on Si and a preparation method, and relates to the technical field of semiconductor photoelectric devices. The intrinsic Ge epitaxial layer is positioned on the upper surface of the N-type Si substrate; the P-type Ge region is positioned in the intrinsic Ge epitaxial layer and is close to the upper surface of the intrinsic Ge epitaxial layer; the first metal electrode and the second metal electrode are in ohmic contact with the P-type Ge region and the N-type Si substrate respectively. The intrinsic Ge layer is epitaxially grown on the N-type Si substrate to serve as an absorption region, a Si / Ge heterojunction PIN structure is constructed, and reverse injection of carriers is effectively inhibited by utilizing an energy band potential barrier of the Si / Ge heterojunction, so that the dark current of the device is remarkably reduced. Meanwhile, by accurately controlling the thickness of the intrinsic Ge epitaxial layer, the bandwidth and the responsivity of the device can be flexibly balanced so as to meet the requirements of different application scenes such as high-speed communication or high-sensitivity detection.

The utility model discloses a kind of paint spraying production lines for mechanical structural parts, it is related to paint spraying production line technical field;Including annular track;Annular track includes annular track ontology and multiple support frames, multiple support frames are connected between annular track ontology and ground, so that annular track ontology is higher than ground preset distance;Annular track is slidably connected with hoisting mechanism, hoisting mechanism is used to hang mechanical structural parts;Annular track is sequentially provided with primer front side spraying station, primer back side spraying station, topcoat front side spraying station and topcoat back side spraying station along clockwise direction;The primer front side spraying station includes primer front side spraying chamber and be connected in the first paint spraying mechanism, first water storage mechanism and first water distribution mechanism in primer front side spraying chamber;First paint spraying mechanism is used to spray primer to the front side of mechanical structural parts, and first water distribution mechanism can realize downward output water flow and transport the excess paint mist in primer front side spraying chamber to first water storage mechanism.

The invention discloses a portable intelligent robot, belongs to the technical field of intelligent robots, and aims to solve the problems that when an intelligent accompanying voice robot is used, the temperature of an internal soft package battery is extremely easy to rise abnormally, and safety isolation and risk management and control are difficult to realize quickly after the temperature of the battery is high. The intelligent accompanying robot solves the problems that a battery cannot be isolated from core elements in the robot in time, key components such as a voice module and a main control board are prevented from being damaged due to liquid leakage and swelling of the high-temperature battery, and potential safety hazards are further caused due to the fact that heat diffusion is difficult to prevent and causes faults of the whole robot. According to the intelligent accompanying robot, when the temperature of the soft package battery reaches a preset threshold value, safe bin unlocking and sliding-out, soft package battery bin returning and limiting, sealing isolation and power failure alarm can be synchronously completed, physical isolation of the battery and a core component is rapidly achieved, heat and leakage diffusion is blocked, risks are avoided from the source, and the safety of the battery is improved. And the multi-scene use safety of the robot is improved.

The application relates to the technical field of spent fuel electrolytic reduction, and provides an electrolysis device, which comprises an operation chamber, a reaction container, an electrode assembly, a cooling device, a purification circulating device and an auxiliary device, the operation chamber is formed with an operation cavity and a visual window; the reaction container comprises a body and a cover, the body is formed with a reaction cavity and a mounting port, the reaction cavity is used for placing a molten salt electrolyte, the cover is arranged at the mounting port, and the part of the body, where the cover is arranged, is arranged in the operation cavity; the electrode assembly comprises an anode part and a cathode part, the anode part is used for placing a reducing agent, and the cathode part is used for placing oxide spent fuel; the cooling device is arranged at the connection between the body and the operation chamber and is located outside the operation cavity; the purification circulating device is communicated with the reaction cavity and is used for removing impurities from the molten salt electrolyte; and the auxiliary device comprises a heating assembly and a trapping assembly, the trapping assembly is used for collecting gaseous molten salt electrolyte, and the heating assembly is used for heating the reaction cavity. The electrolysis device provided by the application can safely treat oxide spent fuel through multiple passive safety designs.

The invention discloses a preparation method of a metal-semimetal double-monatomic catalyst loaded on the basis of a carbon molecular sieve. The preparation method comprises the following steps: S1, carrying out activation pretreatment on a carbon molecular sieve carrier; s2, mixing the pretreated carbon molecular sieve powder with a copper salt and a selenium source, adding a solvent, stirring, and performing ultrasonic treatment to obtain precursor powder; and S3, putting the precursor powder obtained in the step S2 under inert atmosphere protection, and carrying out heat treatment. Through the electronic coupling and synergistic effect between copper and selenium atoms, the electronic structure of the catalyst can be precisely regulated and controlled, the efficiency of a reaction path is optimized, the interaction between copper and LiPSs is promoted, the catalytic performance of the catalyst is enhanced, in the adsorption and catalytic conversion process, the affinity of LiPSs and the catalyst is remarkably improved, the shuttle effect is inhibited, and the catalytic performance of the catalyst is improved. And the method has wide application prospect and important value in the research and practice of the lithium-sulfur battery.

The invention belongs to the technical field of coal mine drilling, and particularly relates to drilling equipment and method for underground coal mine geological prospecting. The drilling equipment comprises a driving assembly, a console body is arranged on the driving assembly, a plurality of fixing assemblies are arranged below the driving assembly in an array mode, and a punching assembly is arranged on the driving assembly; the driving assembly comprises two bases, a plurality of fixing columns are fixedly connected to the upper end of the lower base in an array mode, and first electric telescopic rods are fixedly connected to the lower ends of the fixing columns. The pressure control assembly and the console are arranged, hydraulic oil flow division and pressure relief are achieved by adjusting the position of the sealing cover, sparks caused by too large impact force during hard rock stratum operation are avoided, and the underground anti-explosion requirement is met; the console monitors the moving speed of the drilling head in real time and intelligently adjusts the rotating speed of the motor and the telescopic mode of the hydraulic oil telescopic rod; a drilling head is protected in a low-speed and reciprocating impact mode in a hard rock stratum, efficient drilling is kept in a soft rock stratum, and different geological conditions are adapted.

This invention discloses a gate interconnect structure and its fabrication method, as well as a semiconductor device and its fabrication method. The gate interconnect structure includes: a gate; a first insulating layer located on one side of the gate; the first insulating layer including a first groove exposing a portion of the gate; a barrier layer including a first barrier layer and a second barrier layer, the first barrier layer and the second barrier layer having the same lattice constant; the first barrier layer including a first grain boundary line extending from the side of the first barrier layer away from the gate to the side of the first barrier layer near the gate; the second barrier layer including a second grain boundary line extending from the side of the second barrier layer away from the gate to the side of the second barrier layer near the gate; the first grain boundary line and the second grain boundary line are staggered along a direction parallel to the gate; and a gate metal trace located on the side of the barrier layer away from the gate. This invention can solve the problem of aluminum atoms in the gate metal trace fusing with the polycrystalline silicon gate.

The application discloses a GaAs-based low-capacitance high-bandwidth PIN photodiode and a preparation method thereof, and relates to the technical field of semiconductors.The PIN photodiode comprises a GaAs substrate, a deformation growth layer and an InP-based PIN functional layer.The deformation growth layer is used for realizing the lattice constant transition from the GaAs substrate to the InP-based PIN functional layer.The InP-based PIN functional layer comprises an n-type contact layer, a first intrinsic layer, an intrinsic absorption layer and a window layer, and the first intrinsic layer is provided with an ion implantation modification area, which is used for forming a high-resistance area to reduce the effective electrical junction area of the device.The application realizes the heterogeneous integration of the GaAs substrate and the InP-based PIN functional layer through the deformation growth layer, significantly reduces the device cost, realizes the physical decoupling of the photosensitive area and the electrical junction area through the ion implantation modification area, and significantly reduces the intrinsic junction capacitance while maintaining a large optical aperture, thereby systematically solving the inherent contradiction among the bandwidth, the responsivity and the cost in a high-speed PIN-PD.

The application belongs to the technical field of part cutting, in particular to a loader drive axle machining and cutting device, which comprises a workbench, a cutting machine and a double-station switching assembly; the upper side of the workbench is provided with a sink; the top of the workbench is fixedly connected with a portal frame; the surface of the portal frame is fixedly connected with a telescopic cylinder; the double-station switching assembly comprises a sliding plate, a gear, a toothed plate and a motor one; the surface of the sliding plate is provided with two stations, each station is provided with a positioning mechanism and a cutting seam; the inside of the workbench is rotatably connected with a gear; the bottom of the sliding plate is fixedly connected with a toothed plate; the side of the workbench is fixedly connected with a motor one; the double-station switching assembly can move the workpiece that has completed cutting to the loading and unloading area, and at the same time, the workpiece that has completed installation is moved to the cutting area, so that the cutting and loading and unloading operations are simultaneously performed, and the auxiliary working time of the equipment is effectively shortened.

The utility model belongs to the technical field of quartz sand preparation, and particularly relates to a vacuum sintering device. The vacuum sintering device provided by the utility model can provide a vacuum environment for quartz sand preparation, impurities in gas-liquid inclusion can be more effectively removed in a high-temperature vacuum state, the purity of the quartz sand is improved, the vacuum environment has no pollution source, and the quality of the quartz sand can be effectively controlled. Meanwhile, the vacuum environment is beneficial to inhibiting volatilization and diffusion of some impurities and preventing the impurities from entering the quartz sand again; the high-temperature vacuum state is beneficial to removal of hydroxyl in the quartz sand. According to the vacuum sintering device provided by the utility model, quartz sand can be prepared by adopting single equipment, the prepared quartz sand is high in purity which is more than 99.998%, the hydroxyl content is low, the hydroxyl content is less than 1ppm, the granularity is 0.1-0.3 mm, the quartz sand can be used as a raw material of inner-layer sand of a photovoltaic or semiconductor quartz crucible, meanwhile, the production efficiency is improved, and the vacuum sintering device is green and environment-friendly.

The application provides a stretchable display panel and a preparation method thereof and a display device. The stretchable display panel comprises island regions and hole regions between adjacent island regions; the edges of the island regions extend to the hole regions and are provided with a plurality of extension regions, and the plurality of extension regions are distributed in a trapezoidal shape; and at least one extension region is provided with an isolation column. The stretchable display panel provided by the application forms a plurality of extension regions extending to the hole regions at the edges of the island regions, the plurality of extension regions are distributed in a stepped manner, and the isolation column is arranged on the extension region; when the encapsulation layer is patterned and the substrate is stripped, the crack generated by the encapsulation layer of the hole region can be effectively blocked from spreading to the display substrate, and the risk of encapsulation failure is reduced.

The application provides a multi-layer satellite network distributed routing method and system, the method comprising: dividing a low-orbit satellite set into multiple low-orbit satellite regions, each low-orbit satellite region corresponding to at least one medium-high-orbit satellite as a regional control node; multiple medium-high-orbit satellites cooperatively generating an exit selection strategy for each low-orbit satellite region and issuing the exit selection strategy to the corresponding low-orbit satellite region; low-orbit satellites in a low-orbit satellite region taking the corresponding exit selection strategy as an inter-regional forwarding constraint and performing hop-by-hop autonomous forwarding in the low-orbit satellite region; and multiple medium-high-orbit satellites updating the exit selection strategy for each low-orbit satellite region based on updated regional network state. The multi-layer satellite network distributed routing method and system of the application can reduce the frequency of cross-region path reconfiguration while retaining the real-time response capability of hop-by-hop routing, thereby enhancing the overall stability and scalability of the system.

This invention discloses a high-temperature resistant, long-life carbide-based multilayer special functional coating and its preparation method. The method includes the following steps: (1) carbide coating; (2) powder preparation; (3) transition layer spraying; (4) special functional layer spraying; and (5) protective layer spraying. The carbide-based multilayer special functional coating prepared by this invention can greatly improve the coating's high-temperature resistance, oxidation resistance, and service life, and can meet the needs of various fields for special functional coatings.

This application relates to a polypropylene composite material, its preparation method and application, and cables. By weight, the polypropylene composite material comprises the following components: 60-80 parts polypropylene, 20-40 parts ungrafted elastomer, 0.5-1.5 parts grafted elastomer, 0.01-0.2 parts β-nucleating agent, and 3-6 parts hydrophilic agent; the hydrophilic agent includes at least one selected from ethylene-acrylic acid copolymer, polyvinyl butyral, polyacrylic acid, polyvinyl alcohol, and ethylene vinyl alcohol copolymer. The components in this polypropylene composite material interact with each other, effectively improving the water-tree resistance of the polypropylene composite material, while also exhibiting high tensile strength and elongation at break.