48results about How to "Does not affect test accuracy" patented technology

The invention relates to a blanc fixe cementitious rock soil-like material and a method for making simulative rock from the blanc fixe cementitious rock soil-like material and belongs to the technical field of rock material simulation in a geomechanical model test. The blanc fixe cementitious rock soil-like material comprises blanc fixe as a aggregate, bentonite as an auxiliary material, and dilute glue composed of 107 glue and water. The method comprises the following steps of drawing a water-binder ratio-shearing strength f curve by the blanc fixe cementitious rock soil-like material, calculating wet density of different batches of the blanc fixe cementitious rock soil-like materials, and making a small test-piece from different batches of the blanc fixe cementitious rock soil-like materials. The blanc fixe cementitious rock soil-like material has a low cost and no toxicity, can be processed into small blocks easily, and can satisfy requirements of a geomechanical model test on the blanc fixe cementitious rock soil-like material. Simulative rock made from the blanc fixe cementitious rock soil-like material does not influence a model building process and can be made fast so that a model test rate is greatly improved. The blanc fixe cementitious rock soil-like material is suitable for the field of a test on a model built by laying small blocks.

The invention relates to a thin-film thermoelectric material resistivity test system and a method. The test system adopts a new thin-film thermoelectric material resistivity test instrument which is based on the principles of dual electro-testing and four probes to test the resistivity of a thin film thermoelectric material and is composed of a test fixture and a control and test circuit system. A thin film thermoelectric material sample to be tested is arranged in the test fixture, and the test fixture is connected with the control and test circuit system by a probe guide wire. The control and test circuit system gives pulse current signals to two of the four probes in the test fixture by the probe guide wires and collects voltage response signals between another two probes, the pulse current signals and the voltage response signals are simultaneously input in a micro-computer, and the real-time resistivity of the thin film thermoelectric material at the tested position is displayed on a display screen of the micro-computer. The test system and the method can greatly reduce the impacts of the distances among the probes and the transverse wandering of the probe tips on the resistivity test result, and the test precision can not be affected even the tested piece is smaller and the probes are positioned in the vicinity of the sample boundary.

The invention discloses a training method of a convolutional neural network, an image processing method and apparatus, a computer storage medium, a computer readable storage medium and a computer program. The training method of the convolutional neural network includes: deleting at least a non-linear correction layer arranged behind a linear structural layer in a first convolutional neural networkto obtain a second convolutional neural network; and performing supervision training on the second convolutional neural network based on a training image and annotated information of the training image. The image processing method comprises: merging at least a serial branch and / or at least a parallel branch in the second convolutional neural network after training completion to obtain a third convolutional neural network, wherein the at least one non-linear correction layer arranged behind a linear structural layer in the second convolutional neural network is deleted; inputting the image tothe third convolutional neural network; and processing the image through the third convolutional neural network to obtain a processing result of the image.

The invention discloses a manufacturing technology of a glass fiber / epoxy resin composite material substrate type fiber bragg grating sensor. The manufacturing technology comprises the steps that glass fiber / epoxy resin prepreg is procured to prepare a glass fiber / epoxy resin composite material substrate; a fiber bragg grating is fixed to the glass fiber / epoxy resin composite material substrate; the glass fiber / epoxy resin composite material substrate fixed with the fiber bragg grating is covered with a dry-state glass fiber cloth, vacuum aided filling of liquid epoxy resin is performed, and secondary curing molding is performed. The manufacturing technology adopts the secondary curing molding in the packaging process, the interlayer interface strength is remarkably improved, accordingly the testing precision and stability of the fiber bragg grating sensor are improved, batch production of the fiber bragg grating sensor can be achieved, and the manufacturing technology has wide market prospect and huge economic benefit.

The invention relates to the field of icing adhesion strength testing,and discloses an icing adhesion strength testing device. The icing adhesion strength testing device comprises a cooling table,a cooling circulator,a sleeve,a part to be tested and a force testing element. The cooling circulator is connected with the cooling table through a refrigerant circulating pipeline,the part to be tested is fixed to the cooling table,and the upper end and the lower end of the sleeve are open. A pull groove is formed in the circumferential direction of at least one end of the sleeve,the end,provided with the pull groove,of the sleeve is arranged on the part to be tested,and liquid is injected into the sleeve and cooled into an icicle through the cooling table; one end of an element with force to betested is connected with a connecting rope sleeve,the connecting rope sleeve is sleeved with the pull groove of the sleeve,the element with the force to be tested exerts pull force to the sleeve through the connecting rope sleeve until the icicle is separated from the surface of the part to be tested,and the icing adhesion strength between the icicle and the part to be tested is calculated. The icing adhesion strength testing device is easy,convenient and fast to operate,and good in result repeatability.

The invention relates to a characteristic testing method and device applied to different aging stages of super capacitors. The method includes the steps such as pre-testing, characteristic testing, temperature adjustment, temperature standing and aging testing. The device comprises power grid input, a power conversion device, a transitional super capacitor, a DC / DC converter, a temperature control box, a tested super capacitor and a host computer. Compared with the prior art, the characteristic testing method and device of the invention have advantages of a wide covering range, small characteristic influence, highly targeted performance, short consumed time and the like.

The invention discloses a non-contact nondestructive testing method and a non-contact nondestructive testing device for thermal insulation temperature of a thermal barrier coating. The method belongsto the technical field of nondestructive testing, and comprises the following steps: simulating a real service environment, heating the surface of a ceramic layer of the thermal barrier coating, cooling a high-temperature alloy matrix surface, and measuring the temperatures of a ceramic top layer of a high-temperature alloy component with the thermal barrier coating and the interface between the back surface of the ceramic layer and a metal bonding layer by using an infrared thermometer. Compared with an existing thermocouple contact temperature testing technology, the method has the advantages that non-contact measurement is achieved, so an original gas flow field and an original temperature field on the surface of the thermal barrier coating and in an air channel of the hollow blade arenot affected; temperature testing response is fast, the testing process is simple, and the method is high in practicability.

A storage structure for a micro-electronic component is provided, which comprises a chip with completed back end technique and a polymer layer that is covered on the surface of the chip and can be dissolved in solvent. Because the polymer layer is able to isolate the surface and external environment of the chip, the invention is able to prevent the occurrence of erosion, fading or stratification on the surface of the chip.

The invention relates to an absorption rotary wheel simulated condition dynamic automatic test system, and belongs to the technical field of air pollutant disposal. The absorption rotary wheel simulated condition dynamic automatic test system comprises a first room body, a second room body, a third room body, a fourth room body and a fifth room body, the first room body is communicated with the second room body through a first draught fan, the third room body is connected at the rear end of the second room body, the fifth room body is connected at the upper end of the second room body through a regeneration air inlet pipe and a regeneration air return pipe, and the fourth room body is connected at the rear end of the fifth room body. The absorption rotary wheel simulated condition dynamic automatic test system has the advantages of being high in automation degree, accurate in test data, wide in application range, and stable and reliable.

The invention discloses a temperature detection method based on temperature field distribution of a high-voltage switch cabinet. Temperature distribution of the outer surface of a high-voltage switchcabinet is detected in a non-contact manner to monitor the temperature change of a corresponding area in the high-voltage switch cabinet; and on the basis of a partial least squares regression method,a temperature value of a corresponding monitoring point is calculated by combining an influence factor. According to the invention, because of the non-contact temperature measurement, the internal structure of an original switch cabinet is not affected and the temperature field distribution is not affected; and the contact temperature is accurately calculated through the partial least squares regression method according to the principle of switch cabinet temperature field distribution, so that the accurate testing is guaranteed. Besides, a temperature detection system provided by the invention has an automatic inspection function and only one set of temperature detection system needs to be installed in one power distribution room, so that the installation and operation cost is low, the economical and practical effects are realized, and the safety and reliability are high.

The invention relates to a method and system for compositely testing a veiling glare coefficient and point source transmittance. Cost can be saved to a large extent. According to the method, the positions of a collimating mirror in a first system and a second system are debugged in advance, and when the veiling glare coefficient is measured, the collimating mirror is moved to the position marked in the first system. When the point source transmittance is measured, the same collimating mirror is moved to the position marked in the second system. The system comprises the first system used for measuring the veiling glare coefficient and the second system used for measuring the point source transmittance, and the first system and the second system share the same collimating mirror. An off-axis reflector mechanism is innovatively used in the method and system, testing cost is greatly saved, and through the cooperation of a light source system, a collecting system and the like, the accurate and complete test of the stray light restraining capacity of the optical component of a large-bore long-focus camera is achieved.

The invention relates to improvement of a cuvette for optical detection. The improved cuvette is characterized in that a non-light transmission surface of the cuvette is provided with a hollow interlayer, and the hollow interlayer is provided with a circulating inlet-outlet channel for a thermal fluid medium to pass through an interlayer surface. The preparation method of the cuvette comprises the following steps: respectively heating and bending bar-shaped optical light transmission sheets which have equal widths and undergoe qualified processing into two U shapes with the different bending widths; internally and externally suspending and nesting two bending U shapes; positioning one side face on a substrate through binding for shaping; carrying out grinding processing on the nested U shape to position the opposite side to the horizontal; binding a light transmission plane film and separating from the positioning substrate; carrying out the grinding processing on an original binding side to an optical path size; binding the other light transmission plane film; and respectively binding a sealing plate and manufacturing an interface at the upper end of the hollow interlayer. Compared with the prior art, the cuvette has the hollow interlayer so that the cuvette has a constant temperature function, thereby completely satisfying the requirement of a constant temperature test.

The OTDR performance evaluation device of the invention comprises an OTDR and a disk-mounted standard optical fiber, wherein the standard optical fiber has an optical fiber connector, and the OTDR andthe standard optical fiber are connected through an optical fiber connector of the standard optical fiber. The OTDR performance evaluation method of the invention utilizes the OTDR and the standard optical fiber to test the optical fiber loss characteristics. The OTDR is connected with an optical fiber connector at one end of a standard optical fiber, and the optical fiber connector at the otherend of the standard optical fiber is connected with an optical fiber transmitting mirror, and the optical fiber length is tested. The OTDR is connected to the optical fiber connector at one end of thestandard optical fiber, and the optical fiber connector at the other end of the standard optical fiber is connected to the optical fiber trap for testing the dynamic range and blind area. The OTDR performance evaluation device and method of the invention can realize the functions of testing the length, loss, etc. of the OTDR, and the functions of testing the dynamic range, blind area and the like, so that the whole device is smaller and lighter without affecting the testing accuracy, and the function coverage is wider. The OTDR performance evaluation device and the OTDR performance evaluationmethod of the invention can realize the functions of testing the dynamic range, blind area and the like.

The invention relates to a microwave coaxial resonant cavity and belongs to the technical field of measurement of microwave band electromagnetic parameters of materials. The microwave coaxial resonant cavity includes a cavity upper cover, a cavity body, through holes, a hollow metal column and a clamping device which is located in the hollow metal column and is attached to the hollow metal column; the clamping device includes a bolt, a solid metal column and a metal cone; the bolt is attached to the solid metal column; the solid metal column is provided with a protrusion used for positioning; a groove which is matched with the protrusion of the solid metal column is formed in the metal cone; the bolt is connected with the cavity upper cover through a screw thread; the metal cone is composed of two completely-identical parts; a through hole used for positioning a metal probe is formed at the center of the metal cone; the through hole at the center of the metal cone, a through hole at the bottom of the hollow metal column and a through hole at the bottom of the cavity body of the resonant cavity are located at the same axis; and the hollow metal column electrically contacts with the metal probe. With the microwave coaxial resonant cavity of the invention adopted, the installation and replacement of the metal probe can be facilitated, and the metal probe can be located at the center of the resonant cavity assuredly.

The invention discloses a vibration screen mesh easy to assemble and disassemble. The vibration screen mesh easy to assemble and disassemble comprises a plurality of screen meshes, wherein an upper notch is arranged on the top part of each screen mesh; a lower bulge is arranged on the bottom part each screen mesh; each lower bulge can be placed fitting to the corresponding upper notch; a sealing rubber strip is adhered and fixed to the bottom part of each lower bulge, is hollow, and is in an annular shape after being adhered; the inner diameter of each annular shape is larger than the outer diameter of screen cloth; one end of each sealing rubber strip is sealed; the other end of each sealing rubber strip stretches out of the outer side of each screen mesh; and a ball part air bag is arranged at the stretching end of each sealing rubber strip. According to the vibration screen mesh easy to assemble and disassemble provided by the invention, principles of hollow sealing rings and sucking balls are ingeniously utilized, and each two adjacent layers of screen meshes are automatically separated after the screening is accomplished, so that the operation can be carried out simply and conveniently, the testing accuracy of the screen mesh cannot be affected, and the service life of the screen mesh is prolonged.

The invention relates to a thin-film thermoelectric material resistivity test system and a method. The test system adopts a new thin-film thermoelectric material resistivity test instrument which is based on the principles of dual electro-testing and four probes to test the resistivity of a thin film thermoelectric material and is composed of a test fixture and a control and test circuit system. A thin film thermoelectric material sample to be tested is arranged in the test fixture, and the test fixture is connected with the control and test circuit system by a probe guide wire. The control and test circuit system gives pulse current signals to two of the four probes in the test fixture by the probe guide wires and collects voltage response signals between another two probes, the pulse current signals and the voltage response signals are simultaneously input in a micro-computer, and the real-time resistivity of the thin film thermoelectric material at the tested position is displayed on a display screen of the micro-computer. The test system and the method can greatly reduce the impacts of the distances among the probes and the transverse wandering of the probe tips on the resistivity test result, and the test precision can not be affected even the tested piece is smaller and the probes are positioned in the vicinity of the sample boundary.

The invention discloses a method for testing the sensing delay performance of an automatic driving vehicle, and the automatic driving vehicle comprises a sensing sensor used for generating sensing data, and an automatic driving system used for analyzing the sensing data and outputting a sensing result. The method comprises the following steps: S1, setting an object to be tested and an automatic driving vehicle according to a predetermined test scheme; S2, generating sensing data of the to-be-measured object through a sensing sensor; S3, selecting a reinjection sample from the sensing data, injecting the reinjection sample into the automatic driving system according to the frequency of generating the sensing data by the sensing sensor, and recording the injection starting time t1 and the time t2 of generating the first frame of correct sensing result data by the automatic driving system; and S4, calculating a value of [delta]T=t2-t1, and taking the value as the sensing delay of the automatic driving vehicle. The invention discloses a device for testing perception delay performance of an automatic driving vehicle. The method has the beneficial effect of accurately reflecting the perception delay performance of the vehicle.

The invention relates to a method for improving the actual measurement precision of mining-induced stress. The device comprises a stress meter, a hole sealing plug, a spacing rod, a grouting pipe andan elastic rubber sleeve. The method comprises the following steps: firstly, testing coal-rock mass strength and elasticity modulus of a stress meter planned mounting layer in a laboratory; preparinggrouting materials with the same or similar mechanical characteristics; drilling a hole in a coal-rock mass with mining stress to be measured, installing a borehole stress meter and grouting the drilled hole, so the broken and plastic surrounding rock on the periphery of the drilled hole is solidified again, and the drilled hole and the surrounding rock have the mechanical property of the completecoal and rock mass; when the mining stress is changed, the grouted drilled surrounding rock can transmit the mining stress to the drilled hole stress meter in time, effectively and basically in a lossless mode, and the actual measurement precision of the mining stress is remarkably improved. The method is suitable for mining-induced stress actual measurement under various surrounding rock conditions, and many defects of a traditional testing method are effectively overcome; the method is simple, testing is reliable, precision is high, and very important application and popularization value isachieved.

The invention provides a minimal fluidflowmeter, and aims to solve existing problems; the revolve directions of testing gears an existing minimal fluidflowmeter are unstable in testing; the mutually engaged testing gears can form frequent rotations in forward and backward directions, and the testing gear revolve direction is very unstable; the testing gears need certain time to form stable revolution, such impact will affect the testing accuracy, thus reducing testing gear service life, and affecting gear shaft and bearing service life; the minimal fluidflowmeter can solve said problems, and is provided with a housing; a fluid testing cavity is arranged in the housing; one side of the fluid testing cavity is provided with a fluid inlet, and the other side of the fluid testing cavity is provided with a fluid outlet; a pair of mutually engaged testing gears are arranged in the fluid testing cavity; a fluid shunting inlet is arranged between the fluid inlet and the fluid testing cavity. The minimal fluidflowmeter can be widely applied to minimal fluid flow measurements.

The invention relates to a supercritical carbon dioxide compression cycle test bench. The supercritical carbon dioxide compression cycle test bench is formed by integrating a magnetic suspension motor module, a gas compressor module, a cooling module, a pressure reducing valve module and a sensor module. The rotating speed and the load of a magnetic suspension motor are changed through a magnetic suspension motor monitoring unit in the supercritical carbon dioxide closed circulation measurement and control platform, and different degrees of supercharge ratios of a gas compressor are controlled; the heat exchange effect of the cooler is controlled by changing the opening degree of a circulating water pump in the cooler. Through the use of the pressure reducing valve, the isentropic expansion process of working of the turbine in the Brayton cycle is simulated, and the pressure reducing valve can be controlled through the industrial personal computer so as to adjust the state of an outlet working medium. By monitoring the temperature and the pressure of the key measuring point and the mass flow rate of the supercritical carbon dioxide in the pipeline, the key performance of the supercritical carbon dioxide Brayton cycle core equipment can be tested, the influence of the supercritical carbon dioxide Brayton cycle core equipment on the Brayton thermodynamic cycle is researched, and the working state of the supercritical carbon dioxide Brayton cycle core equipment is monitored.

The invention provides a conductive slip ring friction moment precise measurement device, and relates to the field of precise instrument tests. The device includes a bed plate, a vertical plate, a conductive slip ring, a top plate, a slip ring rotor stirring circular ring, a measuring meter, a test disc, a fixed plate and a slip ring rotor end outgoing line, wherein the bed plate is vertically fixed at the bottommost end; the vertical plate is vertically fixed at the top of the bed plate; the top plate is horizontally fixedly mounted at the top of the vertical plate; the conductive slip ring is fixedly mounted on the lower surface of the top plate; the bottom of the conductive slip ring is fixedly equipped with the slip ring rotor stirring circular ring; the slip ring rotor stirring circular ring is fixedly mounted on the upper surface of the test disc; the test disc is fixedly mounted on the upper surface of the fixed plate; the edge of the upper surface of the test disc is fixedly equipped with the measuring meter; and the lower end of the slip ring rotor stirring circular ring is coaxially equipped with the slip ring rotor end outgoing line. The conductive slip ring friction moment precise measurement device realizes accurate measurement of the starting friction moment of a conductive slip ring, repeatedly measures the same conductive slip ring, and has relatively high consistency.

The invention relates to the technical field of pipeline monitoring, in particular to a pipeline corrosion monitoring method and system and electronic equipment, and the method comprises the steps: obtaining a first magnetic field gradient modulus and a second magnetic field gradient modulus, and determining a damage grade index of a second preset position according to the first magnetic field gradient modulus and the second magnetic field gradient modulus, and then determining a current ratio between the current defect stress value of the second preset position and the yield strength corresponding to the material of the to-be-monitored pipeline according to the damage grade index, and performing early warning according to the current ratio and a preset early warning strategy, so that the stress safety state of the second preset position of the to-be-monitored pipeline can be effectively evaluated. And the accuracy of test results is high.

The invention discloses a line connection method for measuring internal resistance of a battery. The method includes that a power line is used to enable a positive electrode and a negative electrode of a storage battery to be in series connection for acquiring voltage sampling value; the power line is used to enable the positive electrode of the storage battery to pass a negative electrode of a first storage battery to connect with a first interface of a load resistance; and the power line is used to enable the negative electrode of the storage battery to pass a positive electrode of a second storage battery to connect with a second interface of the load resistance for conducting constant-current discharging of the storage battery. By adoption of the line, the internal resistance value of the storage battery is figured out according to Ohm law. The method enables the voltage sampling line and a discharge line to be separated, and therefore line voltage drop caused by large current in discharge process is avoided, and measuring accuracy of the internal value of the storage battery cannot be influenced.

The invention provides a phosphorus content determination method, which comprises: (1) dissolving a sample with a mass of m in water, adding a buffer solution, adjusting the pH value to 8-10, and adding a metal indicator to obtain a colored sample solution; (2) a magnesium salt solution with the molar concentration of C1 is added into the colored sample solution obtained in the step (1) through titration until the reaction endpoint, and the volume of the consumed magnesium salt solution is V1; (3) the phosphorus content P% is calculated according to a formula, the unit of C1 is mol / L, the unit of V1 is mL, the unit of m is g, M is the molar mass of phosphorus, and the unit is g / mol. The phosphorus content determination method provided by the invention is simple, rapid and accurate to operate, and can greatly improve the test efficiency on the premise of not influencing the test accuracy.

The invention discloses a torque test platform for shifting fork double rotors. The torque test platform comprises a supporting frame, a torque testing device and a bearing driving mechanism. The bearing driving mechanism comprises a shifting fork dual-rotor placing disc which is arranged on the supporting frame in a sliding manner and is used for bearing the shifting fork dual rotors, an elastic piece which is arranged on the supporting frame and is used for enabling the shifting fork dual- rotorplacing disc to tend to move towards one side close to the torque testing device, and a locking mechanism which is used for keeping the shifting fork birotor placing disc fixed relative to the support frame. The shifting fork dual-rotor placing disc comprises an initial position and a testing position, when the shifting fork dual-rotor placing disc is located at the initial position, the elastic piece is in a compressed state, the locking mechanism is in a locked state, and the shifting fork dual rotors are separated from the torque testing device; when in the test position, the elastic piece is in an extended state, the locking mechanism is in an unlocked state, and the shifting fork dual-rotor is in transmission connection with the torque testing device; a user can conveniently detect the shifting fork dual-rotor equipment, and the quality, efficiency and precision of detection work are improved.

The invention discloses a test fixture special for a vehicle camera. A camera assembly is precisely positioned by a stop surface and positioning holes on a fixing bracket. After the positioning is completed, an operating handle is used to overturn a pressing block to allow a pressing plate and a camera shell profile to attach to each other; when the pressing block is pressed downward, an upper guide block and a lower guide block of a pressing mechanism in a self-locking pressing mechanism match each other to achieve guiding; limiting holes formed in the pressing block match pressing block limiting columns on the fixing bracket to perform limiting; after the profile is completely and accurately attached, a latch of the pressing mechanism is pressed to lock a groove formed in a pressing mechanism lower fixing seat to ensure pressing and achieve self-locking; and the camera assembly clamped by the positioning pressing locking step can overturn arbitrarily, the test accuracy is not affected, and accurate positioning, reliable pressing, and good dynamic and static stiffness of the fixture can be effectively achieved.

The invention discloses a non-contact non-destructive testing method and device for thermal barrier coating insulation temperature, which belongs to the technical field of non-destructive testing. Firstly, the real service environment is simulated, the surface of the thermal barrier coating ceramic layer is heated, and the superalloy substrate is heated. The surface is cooled, and the temperature at the interface between the ceramic top layer and the back of the ceramic layer and the metal bonding layer of the superalloy component with thermal barrier coating is measured by an infrared thermometer. Compared with the existing thermocouple contact temperature test technology, the method of the present invention has non-contact measurement, does not affect the surface of the thermal barrier coating and the original gas flow field and temperature field inside the air channel of the hollow blade, has fast response to temperature test, and simple test process The advantage of this method is that it is more practical.

The invention provides a cold storage constant temperature experiment case which comprises an insulation can, a cool storage apparatus and a refrigeration apparatus, wherein the insulation can has a thermostatic chamber, a cool storage chamber and a placing chamber, and an inlet and an air outlet are provided between the thermostatic chamber and the cool storage chamber to enable cold energy circulation between the thermostatic chamber and the cool storage chamber. The cool storage apparatus is disposed in the cool storage chamber, the refrigeration apparatus is disposed in the placing chamber, the refrigeration apparatus connects with the cool storage apparatus, cold energy generated by the refrigeration apparatus is stored by the cool storage apparatus, thus the thermostatic chamber realizes temperature maintenance through the cold energy stored by the cool storage apparatus.

The invention relates to a blanc fixe cementitious rock soil-like material and a method for making simulative rock from the blanc fixe cementitious rock soil-like material and belongs to the technical field of rock material simulation in a geomechanical model test. The blanc fixe cementitious rock soil-like material comprises blanc fixe as a aggregate, bentonite as an auxiliary material, and dilute glue composed of 107 glue and water. The method comprises the following steps of drawing a water-binder ratio-shearing strength f curve by the blanc fixe cementitious rock soil-like material, calculating wet density of different batches of the blanc fixe cementitious rock soil-like materials, and making a small test-piece from different batches of the blanc fixe cementitious rock soil-like materials. The blanc fixe cementitious rock soil-like material has a low cost and no toxicity, can be processed into small blocks easily, and can satisfy requirements of a geomechanical model test on the blanc fixe cementitious rock soil-like material. Simulative rock made from the blanc fixe cementitious rock soil-like material does not influence a model building process and can be made fast so that a model test rate is greatly improved. The blanc fixe cementitious rock soil-like material is suitable for the field of a test on a model built by laying small blocks.

The invention discloses an auxiliary tooling for screening and testing thermistor chips with surface electrodes, which is used for screening and testing the thermistor chips with surface electrodes. The direction is a vertical metal column, and the insulating cover plate is provided with a plurality of cover plate through holes, the cover plate through holes include a first through hole and a second through hole, and a plurality of cover plate through holes correspond to a plurality of metal columns one by one , the insulating cover plate and the common electrode plate are vertically overlapped and connected, and the metal post is placed in the second through hole and is close to the common electrode plate. In the present invention, by adding a metal post and an insulating base for limiting the position of the metal post, the thermistor chip is placed between one end of the metal post and the common electrode plate during testing, and the tip of the test pen touches the metal post without contacting the surface of the resistance chip. It will scratch the surface of the resistance chip, effectively protect the resistance chip, and the resistance chip will not be displaced with the movement of the test pen, and the resistance value test has good repeatability.