52results about How to "Increase type" patented technology

The invention discloses a sand source resistance and control dynamic configuration method for a hole-to-wind sand area, and relates to the technical field of wind and sand protection, and the method comprises the following steps: collecting meteorological data, wind and sand data and historical sand source change data of the hole-to-wind sand area, and obtaining geographic information and vegetation coverage conditions of the sand source area through a remote sensing technology and ground monitoring equipment; by monitoring key parameters such as wind speed, wind direction and dust concentration in real time and combining high-resolution ground image data acquired by an unmanned aerial vehicle and a satellite remote sensing technology, real-time sensing and accurate analysis of sand source changes are realized, the efficiency and accuracy of data collection are improved, and the detection accuracy is improved. In addition, the prevention and control measures can be dynamically and accurately arranged according to the specific sand source, and by dynamically adjusting the arrangement and density of prevention and control facilities and optimizing the type and area of vegetation coverage, sand storm invasion can be more effectively prevented, the occurrence frequency and intensity of sand storm are reduced, and the efficiency and accuracy of sand source prevention and control are remarkably improved.

The remediation method for the moderately and severely cadmium-polluted rice field aims at strictly controlled cadmium-polluted rice fields, and is divided into two stages of strict control and safe utilization for remediation. In the strict management and control stage, an activating agent is applied to the soil in spring, then microalgae are inoculated, cadmium-enriched plants are planted, the plants are collected after being full of the microalgae, the plants are harvested when the plants grow to the enrichment extreme value, stubbles are reserved for growth, and the steps are repeated till winter; applying an activating agent in winter, planting green manure, and harvesting in spring in the next year; the process is cyclically carried out until the cadmium content of the soil is reduced to a safe utilization level. Entering a safe utilization stage, applying an activating agent in spring, inoculating nitrogen-fixing cyanobacteria, collecting the cyanobacteria after the cyanobacteria overgrow, and repeating the steps until the rice seedlings are transplanted; applying nitrogen-fixing blue-green algae, and planting rice; applying an activating agent after rice harvesting, planting winter green manure, and harvesting in next spring; the process is cyclically carried out until the cadmium content of the soil is reduced to a preferential protection level. The method is low in cost, high in remediation efficiency and good in effect, and a new way is provided for cadmium-polluted rice field remediation.

The invention provides a video monitoring platform adaptive play support optimization method, which comprises the following steps that: a server acquires equipment information and user habits of a terminal, and correspondingly configures a plurality of types of video stream preprocessing strategies; and the server selects a video stream preprocessing strategy based on the prediction operation, and pulls the preprocessed video stream to the corresponding terminal in advance. Wherein when the video picture proportion of the stream pushed by the server is not matched with the picture proportion of the terminal player, the server carries out cutting and scaling on the pushed video stream based on a black edge removing algorithm. According to the method, efficient self-adaptive stream pushing is realized by predicting user habits and combining the preset strategy, on one hand, adaptive coding video streams and code rates can be pushed according to requirements, so that bandwidth occupation is reduced, playing delay is reduced, and terminal types are expanded; and on the other hand, the video stream matched with the picture proportion is pushed by using the black edge removing algorithm in a feedback mode on the server side, so that the effective information of the picture is reserved to the maximum extent, and the playing pressure of the terminal can be reduced.

The invention, which relates to the technical field of modern intelligent fire-fighting equipment, discloses a point-mode extremely-early optical gas composite smoke detection system comprising a power supply communication unit, a main control unit, a detection unit and an air pump unit. The detection unit comprises a CO sensor, a CO2 sensor, an oxygen sensor, four light intensity sensors, two laser light sources with different wavelengths and a laser control and light intensity acquisition module, and is used for transmitting acquired light intensity signals and various gas concentration data to the main control unit; the power supply communication unit can realize the functions of power supply isolation, power supply conversion and RS485 communication, supplies power to other units of the system and provides communication interfaces. According to the invention, a plurality of gas sensors, such as a CO sensor, a CO2 sensor and an oxygen sensor, as well as a light intensity sensor and a laser light source, are integrated, so that gas and smoke parameters related to a plurality of fire disasters can be monitored at the same time, and the comprehensiveness and accuracy of fire detection are improved.

The invention provides a Trichoderma asperellum TAZ19, a biocontrol inoculant and application of the Trichoderma asperellum TAZ19, the Trichoderma asperellum TAZ19 is preserved in the China Center for Type Culture Collection on October 25, 2024, and the preservation number of the Trichoderma asperellum TAZ19 is CCTCC M 20242341. The active ingredients of the biocontrol inoculant comprise the trichoderma asperellum TAZ19 strain, and the trichoderma asperellum TAZ19 strain is one or more of conidia, hypha, fermentation filtrate or active extracts of the trichoderma asperellum TAZ19 strain of the trichoderma asperellum TAZ19 strain. The trichoderma asperellum TAZ19 has an excellent antagonistic effect on a plurality of plant disease pathogenic bacteria such as dispora pinnatifida, a plurality of fusarium oxysporum, apple black beancurd skin fungi and botryosphaeria dothidea, has broad-spectrum antibacterial activity, is high in growth speed, high in antibacterial activity and high in hyperparasitism ability, has better saline-alkaline tolerance, also has a growth promoting effect on plants, and can be widely applied to the field of plant diseases. The strain can be used as an active component of a biocontrol inoculant to be widely applied to prevention and treatment of various plant diseases such as pine tree branch rot, wheat stem rot and tomato fusarium wilt, and has a wide application prospect.

The invention relates to a sensing signal processing method and system based on a metasurface and a complex valued neural network, and the method comprises the steps: processing a coefficient S11 and a coefficient S21 based on a trained and dynamically optimized complex valued neural network, and outputting the dielectric constant of a sample or the concentration of a solution; the complex valued neural network comprises an input layer, a preprocessing layer, a plurality of hidden layers and an output layer; the S11 coefficient and the S21 coefficient are obtained by microwave signals sequentially passing through the sample and the metasurface; the system comprises a transmitting antenna, a receiving antenna, a vector network analyzer, a metasurface and a sensor signal processing module, and is used for realizing the method. Compared with the prior art, the device has the advantages of capability of realizing measurement of various substances, high measurement precision and the like.

The invention discloses a fungal virus mutant as well as a construction method and application thereof, and belongs to the technical field of fungal virus modification. The fungal virus mutant is obtained by point mutation of an initiation codon ATG for coding a protein p18 in an infectious clone pSK-ABC into ACG, a coding gene of the protein p18 is located in an open reading frame of a component C at the 3533rd-5463rd sites of a complete sequence of the infectious clone pSK-ABC, and a nucleotide sequence of the infectious clone of the mutant is shown as SEQ ID NO: 1. The phenotype of the mutant virus infected strain is observed to find that the Mp18 mutant virus can reduce the growth speed of host fungi, and causes the characteristics of abnormal host colonial morphology, conidium yield and pathogenicity reduction and the like; besides, when the attenuated strain induced by the Mp18 mutant and the virulent strain are co-inoculated, scab extension on wheat leaves can be effectively inhibited, so that the effect of preventing and controlling the fusarium graminearum virulent strain is achieved.

The invention discloses a high-strength steel smelting method for improving the purity of molten steel, which comprises the following steps: (1) carrying out composite desulfurization on lime and magnesium powder in a desulfurization station, and then removing slag to ensure that the sulfur in the back of a converter is less than 150ppm; (2) carrying out desulfurization on the LF by adopting lime and an aluminum deoxidizer until the desulfurization is 20-40ppm; (3) after the molten steel begins to circulate in the RH vacuum chamber, aluminum is added according to the predicted oxygen blowing amount, and oxygen blowing operation is carried out after aluminum adding is finished and stabilization is carried out; (4) 140 + / -10 m seamless pure calcium core-spun yarn is fed, and molten steel is statically stirred for 15-20 min after calcium treatment; (5) performing protective casting during continuous casting, and completely eradicating air suction; and (6) a strong secondary cooling water process is adopted for the thick plate continuous casting billet to accelerate dendritic crystal nucleation in the continuous casting billet, and when the solid-liquid phase rate of the continuous casting billet ranges from 0.2 to 1.0, the center segregation of the continuous casting billet is guaranteed under the heavy pressure of 12 mm. The method has the advantages of improving the purity of the molten steel and improving the center segregation of the continuous casting billet.

The utility model relates to a battery conversion device for electric equipment, the electric equipment is provided with a mounting cavity, the mounting cavity is suitable for mounting an A-type battery, the battery conversion device comprises a main body and a conductive piece, the main body is provided with an insertion part, the shape of the insertion part is matched with that of the mounting cavity, and the insertion part is suitable for being detachably matched with the mounting cavity. A mounting groove is formed in one end, far away from the insertion part, of the main body and is suitable for mounting a B-type battery. The conductive part is installed on the main body, one end of the conductive part is used for being in conductive connection with the electric equipment body, and the other end of the conductive part extends into the installation groove and is used for being in conductive connection with the B-type battery. The electric equipment body is conductively connected with the B-type battery through the conductive piece, so that the B-type battery supplies power to the electric equipment which can only be provided with the A-type battery originally. By means of the arrangement, the electric equipment can use the A-type battery and the B-type battery, the types of the batteries capable of being used by the electric equipment are increased, and the utilization rate of the B-type battery is improved.

The embodiment of the invention discloses a window mode switching method, head-mounted display equipment and a medium. A specific embodiment of the method comprises the steps of determining a to-be-switched window mode according to at least one window mode in response to a detected window mode switching operation of a target user and existence of at least one window mode in a field angle of the head-mounted display device; according to window mode switching request information represented by the window mode switching operation, switching processing is carried out on the window mode to be switched, and the window mode switching request information represents that the window mode to be switched is switched into a first window mode, a second window mode or a third window mode; the window mode detail information of the first window mode, the second window mode and the third window mode is different. According to the embodiment, the diversity of the window modes is improved, the limitation of window mode switching is reduced, the degree of freedom of window mode switching is improved, and the experience feeling of a user is further improved.

The invention discloses a mind map format conversion method and device, equipment and a medium, and relates to the technical field of financial science and technology. The mind map format conversion method comprises the steps of obtaining a mind map with a to-be-converted format and a first structure file of the mind map with the to-be-converted format; wherein the file format of the first structure file is a similar xml format or a json format; determining a current node preset conversion rule and a current non-node preset conversion rule according to the file structure type of the first structure file; and converting the first structure file into a second structure file according to the to-be-converted-format mind map, the first structure file, a current node preset conversion rule and a current non-node preset conversion rule, and creating a format conversion mind map according to the second structure file. According to the technical scheme, the type of the file format for exporting the mind map can be expanded, and the flexibility of exporting the mind map is improved.

The invention provides a contact type displacement sensor system, and relates to the sensor field, the system comprises a signal processing chip, a grating code disc, a first chip, a second chip, a third chip and a power supply, the signal processing chip comprises a light source and a photosensitive element, the grating code disc comprises an absolute value type code channel and an increment type code channel, and the first chip, the second chip, the third chip and the power supply are electrically connected. The absolute value type code channel and the increment type code channel are engraved on the grating code disc, the light source emits light rays, the light rays are reflected by the grating code disc, the reflected light rays are processed by the signal processing chip to form digital signals, the signal processing chip is connected with the third chip, the signal processing chip outputs increment signals through the third chip, and the third chip is connected with the absolute value type code channel and the increment type code channel. The first chip is used for reading data in the signal processing chip, the first chip outputs an absolute value signal through the second chip, the internal structure is simplified, the signal output type is expanded, and the signal transmission distance is prolonged.

The present application discloses a conversion middleware, which is applied to an endoscope system. The endoscope system includes an image sensor and a controller. The interface definition and the number of pins of the image sensor and the controller are different. One side of the conversion middleware has at least one first composite pin and at least two first independent pins, and the other side of the conversion middleware has at least one second composite pin and at least two second independent pins; one end of the first composite pin is electrically connected to the controller, the other end of the first composite pin is electrically connected to one end of at least two second independent pins, the other end of the second independent pin is electrically connected to the image sensor, one end of the second composite pin is electrically connected to the image sensor, the other end of the second composite pin is electrically connected to one end of at least two first independent pins, and the other end of the first independent pin is electrically connected to the controller. The present application can realize the connection and communication between an image sensor and a controller with similar transmission protocols but different interface definitions and pin numbers.

The present application belongs to the technical field of daily chemicals, and particularly relates to a hair loss prevention composition containing burdock roots and a preparation method and application thereof. The hair loss prevention composition containing burdock roots is prepared from the following raw materials in parts by weight: 0.1-2 parts of burdock root extract, 0.1-2 parts of cypress leaf extract, 0.1-2 parts of Chinese aristolochia root extract, 0.1-2 parts of angelica root extract and 0.1-2 parts of honeysuckle flower extract. The composition is prepared from the components such as burdock root extract, cypress leaf extract, Chinese aristolochia root extract, angelica root extract and honeysuckle flower extract, can effectively prevent hair loss and inhibit inflammation, and prevent the generation of inflammation of the scalp.

The present invention discloses a microbial agent for preventing and treating soil-borne diseases of ginger, and a preparation method and application thereof, and belongs to the field of microbial technology. The microbial agent of the present invention comprises disease-resistant growth-promoting microorganisms, microbial activity promoters and auxiliary carriers, and the dosage ratio of the three is 10mL:100mL:(30-50)g. The microbial agent of the present invention can effectively prevent and treat ginger blight of ginger, and at the same time can increase the resistance of ginger, promote the growth of ginger, and improve the quality of ginger. At the same time, the strain resources of plant growth-promoting bacteria are enriched. The agent is pollution-free and has no toxic side effects, has strong pertinence, can be stored for a long time after being made into a solid agent, is convenient for field application, and can also effectively improve the soil environment, thereby effectively meeting the nutritional needs of crop growth, and has good practical application value.

The invention provides a method for co-producing lithium hydroxide and lithium dihydrogen phosphate from crude lithium carbonate, which comprises the following steps: S1, pulping the crude lithium carbonate, mixing with a calcium-containing reagent, carrying out causticization reaction, and carrying out solid-liquid separation to obtain causticized liquid and causticized slag; s2, mixing a part of the causticized liquid with a first impurity removal agent and a second impurity removal agent for impurity removal, and after solid-liquid separation, taking a liquid phase to obtain a first impurity-removed liquid; and S3, mixing the first impurity-removed liquid with the remaining causticized liquid, performing resin impurity removal to obtain a second impurity-removed liquid, and performing evaporation concentration and solid-liquid separation on part of the second impurity-removed liquid in sequence to obtain lithium hydroxide crystals and lithium hydroxide mother liquor. And taking the residual second impurity-removed liquid in the step S3, and carrying out lithium precipitation and acidification to prepare lithium dihydrogen phosphate crystals. The problem of product singleness of lithium enterprises is solved.

The invention discloses a method for improving the high-temperature survival rate of lactobacillus paracasei. The method comprises the following steps: adding a stabilizer into a bacterium solution obtained after lactobacillus paracasei fermentation; the stabilizer is a sterile aqueous solution prepared from one or more of trehalose, 2-nitrogen hexanone, gallic acid, glycerol, 3-phenylpropionic acid and cane sugar, and the mass concentration of the added stabilizer is 0.1-8%. By adding the stabilizer, the survival rate of the lactobacillus paracasei at high temperature is increased, the application field of the lactobacillus paracasei is widened, and the limitation of temperature on the application of the lactobacillus paracasei is effectively solved.

The invention relates to the technical field of photovoltaic panels, and discloses a composite fiber reinforced panel for a photovoltaic panel, a preparation method of the composite fiber reinforced panel and a light flexible photovoltaic panel. The composite fiber reinforced plate comprises reinforced fiber cloth and a resin infiltrating material which is cured and formed after the reinforced fiber cloth is infiltrated; the resin infiltrating material comprises ceramic powder, unsaturated polyester resin, an initiator and an accelerant according to a specific mass ratio; the ceramic powder is aluminum oxide ceramic powder or silicon nitride ceramic powder, or mixed powder of aluminum oxide ceramic powder and titanium dioxide ceramic powder; the reinforced fiber cloth is polyimide fiber cloth or glass fiber cloth; the gram weight of the reinforced fiber cloth is 50-500g / m < 2 >, and the reinforced fiber cloth is laid in a single layer or multiple layers. The composite fiber reinforced plate has good scratch resistance, bending strength, dry heat yellowing resistance and high temperature resistance, also has the advantages of flexibility, light weight and difficulty in warping, ensures stable operation of the composite fiber reinforced plate in an extreme outdoor environment for a long time, and is suitable for a high-quality light flexible photovoltaic panel.

This invention belongs to the field of alloys, specifically disclosing a high-strength, heat-resistant aluminum alloy wire material and its preparation method. The aluminum alloy wire material is composed of the following components by mass percentage: Fe 0.5–1.2%, Zr 0.10–0.15%, B 0.01–0.03%, RE 0.01–0.04%, Sr 0.005–0.01%, unavoidable impurities ≤0.15%, and the balance being Al; RE is selected from at least one of La and Ce. The aluminum alloy wire material of this invention has a high iron content. By introducing lower amounts of Sr and RE elements, the type, morphology, and distribution of the iron-rich phase in the aluminum alloy are improved, resulting in high room-temperature tensile strength, excellent conductivity, and good high-temperature resistance.

The invention discloses a conversion middleware which is applied to an endoscope system, the endoscope system comprises an image sensor and a controller, interface definitions and pin numbers of the image sensor and the controller are different, and one side of the conversion middleware is provided with at least one first composite pin and at least two first independent pins. The other side of the conversion middleware is provided with at least one second composite pin and at least two second independent pins; one end of the first composite pin is electrically connected with the controller, the other end of the first composite pin is electrically connected with one ends of at least two second independent pins, the other ends of the second independent pins are electrically connected with the image sensor, and one ends of the second composite pins are electrically connected with the image sensor; the other end of the second composite pin is electrically connected with one ends of at least two first independent pins, and the other ends of the first independent pins are electrically connected with the controller. According to the invention, connection and communication between the image sensor and the controller with similar transmission protocols but different interface definitions and pin numbers can be realized.

The invention discloses an edible fungus fermented black beans based on co-fermentation of Mucor and Aspergillus and its koji making process, belonging to the technical field of food fermentation. The edible fungus fermented black beans are made from edible fungi or their scraps and beans as raw materials, and are obtained after fermentation of mixed fungus spore liquid containing Mucor and Aspergillus, wherein the number ratio of Mucor and Aspergillus is (1-6): (1-6). The protease activity, β-glucosidase activity, amino acid nitrogen content, soybean isoflavone content and antioxidant activity of the edible fungus fermented black beans provided by the present invention are significantly improved, and have excellent nutrient content, biological activity and health care efficacy. The koji making process of the present invention is simple to operate, low in cost, short in fermentation time, and has broad application prospects.

The utility model belongs to strength detection technical field, concretely is a kind of strength detection device for aircraft aviation accessory manufacturing, including the pressure assembly that can be pressed to aviation accessory to detect its strength, the support and load component that can be effectively positioned different types of aviation accessory by different ways is provided in pressure assembly, the clamping assembly that can further enrich the fixed mode of the device to aviation accessory is provided on support and load component. The utility model is convenient to be placed in the adjustable position, the first loading platform with different height bearing plane, the second loading platform, setting the mode of the placement hole of certain size, placement slot and the screw hole of installable clamping assembly, so that the device can be realized the convenient clamping and positioning of multiple aviation accessories by the movement of the first loading platform, the second loading platform, after additionally installing clamping assembly, it can also significantly expand the applicable aviation accessory type, to meet the overall or specific site detection needs of multiple aviation accessories.

Provided is a valve implantation device with the assistance of a heart isolation device, which includes a valve, a heart isolation device, and a valve connection device, wherein the heart isolation device includes an isolation device body; the isolation device body is provided with a positioning part; the isolation device body is fixed on a heart tissue through the positioning part; the valve connection device includes a first connection part; one side of the first connection part is connected with the valve; the isolation device body is provided with a second connection part; and the first connection part and the second connection part are connected during use. The device of the present disclosure can improve the cardiac function before / during valve implantation and increases the effectiveness of an operation. Fixing the valve by the hook-type structure can reduce metal objects required for replacement and avoid potential injury to a heart valve structure. A connector structure connected to the valve stably locates the valve and accurately releases the height of the valve, so that paravalvular leak and injury to a valve annulus plane can be prevented.

The invention provides a novel natural carbon dioxide immobilization pathway and application thereof. The invention also provides methods for producing nucleotides or nucleotide derivatives and methods for immobilizing carbon dioxide using the pathway. The carbon dioxide emission reduction can be realized, and the production raw material cost and the manufacturing cost can be reduced.

The invention relates to a rare earth doped yttrium gallate laser material and a preparation method and application thereof, and belongs to the technical field of intermediate infrared laser gain materials. The rare earth doped yttrium gallate laser material provided by the invention is RE < x > Y < 1-x > GaO < 3 >, RE is at least one of Er, Ho and Dy, and x is more than 0 and less than 1. The invention also provides a preparation method of the laser material and an application of the laser material in mid-infrared laser gain. The mid-infrared laser crystal material with high optical quality is prepared by designing a reasonable temperature field structure, growth process parameters, doping concentration and the like; middle-infrared band laser realized by the crystal material has important application prospects in the fields of medical treatment, environmental monitoring, national defense, scientific research and the like.

The embodiment of the invention discloses a vehicle parking information detection method and device and electronic equipment. According to one specific embodiment, the detection method comprises the steps that parking point detection is carried out based on moving track data of a sample vehicle, parking event information of the sample vehicle is generated, and the moving track data are obtained through a satellite positioning system; determining a first type of monitoring record pair matched with the resident event information according to the collection record of each monitoring device; according to the first type of monitoring record pair and the second type of monitoring record pair, sample data is constructed to be used for detecting whether the collection record of the target monitoring record pair represents the existence of vehicle parking information, and the second type of monitoring record pair is the monitoring record pair which is not matched with the parking event information. The implementation mode is related to a data mining technology, and the vehicle parking information can be detected by utilizing monitoring equipment records. Therefore, the number and the type of analyzable vehicles can be increased.

The invention relates to a multimedia resource interaction method and apparatus, an electronic device and a storage medium. The method comprises the steps of displaying a plurality of preset interaction controls corresponding to a target multimedia resource in a target page; in response to a first preset gesture operation on a target interaction control, displaying a plurality of associated interaction controls corresponding to the target interaction control; the plurality of associated interaction controls are different from the plurality of preset interaction controls; the target interaction control is any interaction control in the plurality of preset interaction controls; and in response to a selection operation on the at least one associated interaction control, displaying interaction result information corresponding to the at least one associated interaction control. According to the method and the device, the number of the interaction controls capable of performing interaction operation can be increased, the types of the interaction controls are expanded, and the interaction modes with the target multimedia resources are enriched.

The invention relates to the technical field of pulse light sources, in particular to a method for simultaneously generating space-time self-splitting and self-focusing of a pulse light beam. The method specifically comprises the following steps: constructing a mutual dry function of a pulse light source in a space domain and a time domain; the mutual coherence function has a cosine-multi-Gaussian correlation form in a space domain and a time domain; the mutual dry function is substituted into a generalized Huygens-Fresnel diffraction integral formula; obtaining an expression of a mutual coherence function of the pulse light source at any position z in the space by utilizing the formula; overlapping the two space points and the two time points to obtain a space-time intensity expression of the pulse light source; when the time-space intensity of the pulse light source is transmitted in the dispersive medium, time-space self-splitting and self-focusing phenomena occur; according to the method, the phenomena of self-splitting and self-focusing of the pulse light source in transmission can be obtained; meanwhile, the self-splitting waveform and the self-focusing degree of the pulsed light in the transmission process can be flexibly controlled. The method can be applied to a laser underwater communication system and can be used for underwater laser processing.

The invention relates to a twin network training method and device, computer equipment and a computer readable storage medium, and the method comprises the steps: obtaining a sample pair set, inputting each type of sample pair in the sample pair set into a sub-twin network in a to-be-trained twin network, obtaining first and second sample image features outputted by a feature extraction network, the classification network obtains image features and outputs first and second prediction behaviors; determining a first loss value based on the difference similarity between the first and second sample image features; obtaining second and third loss values based on the first and second predicted behaviors and the actual behavior; and determining a sub-loss value of each sample pair based on the first to third loss values, the sub-loss values of the multiple types of sample pairs being a total loss value of the sample pair set, when at least one total loss value does not satisfy a training stopping condition, updating network parameters and performing re-training until the stopping condition is satisfied, and the twin network which can be applied to object behavior identification in the vehicle cabin after being trained is obtained.

The invention provides a defect detection method and a defect detection system. According to the detection method, on the basis of learning that echo information of ultrasonic waves on film layers made of different materials is different, whether defects exist in a preset area or not can be judged according to whether the echo information of the film layers in the preset area is matched with standard information of the corresponding film layers or not. The detection method can be applied to defect judgment of all the film layers and can also be used for defect judgment of the contact holes, the convenient and efficient detection effect is achieved, and the product yield is improved.