43 results about "Test panel" patented technology

The invention discloses an air pipe air leakage detection device which comprises a metal plate base, supporting legs are welded and fixed to the metal plate base, and telescopic shafts are slidably connected to the supporting legs. The test panel is rotationally connected to the telescopic shaft, an assembly plate is detachably connected to the test panel, a plurality of mounting discs are arranged on the surface of the assembly plate, and test pipes are mounted on the mounting discs; the air valve assembly is located on each installation disc. A plurality of test tubes can be simultaneously measured by the plurality of mounting discs in batches, so that the working efficiency of the test is improved. The connecting pipelines of the air valve assemblies are mutually connected in series, so that the interiors of the test pipes are communicated, when the interiors of the test pipes are inflated, air can be conveyed into the test pipes through series connection of the air valve assemblies, and therefore sealing performance testing is carried out in batches. And the height position of the detachably connected assembly plate can be adjusted on the test panel, so that the installation height of the test tube is adjusted, and the practical function is further improved.

The application relates to a point screen system, a point screen method, an upper computer and a point screen testing device. The point screen system comprises an application module, a processing module and a driving module. The application module is used for acquiring module information of a to-be-tested panel and a user-indicated test-related parameter of the to-be-tested panel. The processing module is used for selecting a corresponding target analysis library from at least one candidate analysis library according to the module information, and adopting the target analysis library to analyze the test-related parameter to obtain a hardware instruction sequence. The driving module is used for adopting the hardware instruction sequence to drive the to-be-tested panel.

The invention belongs to the technical field of nondestructive testing, and particularly relates to a carbon fiber composite porosity detection reference block and a preparation method thereof. Comprising the steps that carbon fiber prepreg is blanked according to the laying layer angle and the layer number of a detected part, and the allowance not smaller than 20 mm is reserved; carbon fiber prepreg is laid, pre-compaction is not needed during laying, hot compaction is conducted once every 2-8 layers, and after laying is completed, a test panel is obtained; auxiliary materials including a non-porous isolating membrane and a breathable felt are sequentially laid on the surface of the test plate, and then packaging is conducted; and finally, curing and demolding to obtain the reference block. The reference block with no macroscopic defect and uniform pore distribution is prepared by multiple paving, hot compacting and controlled curing processes, and the process is simple and controllable without introducing foreign substances.

The utility model discloses charger test equipment, which comprises an auxiliary power supply module, a switch controller module, a control module, a plurality of test load modules and a plurality of test panels, the output end of the auxiliary power supply module is electrically connected with the switch controller module; the output end of the switch controller module is electrically connected with the control signal input end of the control module; the output ends of the plurality of test load modules are electrically connected with the parameter acquisition input end of the control module; the output ends of the plurality of test panels are electrically connected with the input ends of the plurality of test load modules in a one-to-one correspondence manner; in conclusion, according to the utility model, the plurality of test panels are arranged, corresponding interfaces can be selected according to the models of the power supply interfaces when the power supply is subjected to factory test, the power supply interfaces are connected to the test load, and the output signals of the charger are detected, and the plurality of detachable connectors are arranged on the test panels. And corresponding selection can be performed according to the requirements of chargers.

The utility model relates to the flowability testing arrangement of machineable sand mortar, including bottom plate, the both sides of bottom plate front part are fixedly connected with stand, the upper end between stand is equipped with horizontal bearing frame, and the bearing frame includes horizontal rectangle's supporting plate, and the front end of supporting plate projects the front end of stand, and the front end and side of supporting plate form the protective frame of "Fang" character, and the rectangular concrete bearing plate is inserted to the protective frame, and the upper end surface of concrete bearing plate back side bears the transverse stopper, and the both ends of stopper are fixedly connected on the inner side wall of protective frame, and a plurality of fastening bolts are screwed on the stopper, and the end of fastening bolt is pressed on concrete bearing plate, the front side of protective frame forms the test mouth opposite to concrete bearing plate. The upper part of this testing device can be turned over, and the testing panel on the lower part of the device will be splashed when spraying mortar, the upper part of the device can be rotated when testing, and the accuracy of the test result is high.

The utility model discloses a downward illumination type X-ray fluorescence spectrophotometer which comprises a box body, the upper part of the box body is provided with a test panel, the test panel divides the box body into an operation cavity and a mounting cavity which are arranged up and down, and the test panel is provided with a test hole communicated with the operation cavity and the mounting cavity; the internal assembly comprises an X-ray light tube and a detector which are mounted in the operation cavity, and a light path formed by the transmitting end of the X-ray light tube and the receiving end of the detector in the mounting cavity faces the test hole; the sample testing table is slidably mounted on the testing panel in the operation cavity, and a through hole for placing a sample on the light path in the mounting cavity is further formed in the sample testing table; the adjusting mechanism is installed on the sample testing table and used for adjusting the position of the sample in the first direction and / or the second direction, the first direction is the length direction of the testing panel, and the second direction is the width direction of the testing panel. According to the utility model, the position of the sample can be accurately adjusted by using the adjusting assembly, so that the detection accuracy is improved.

A dual-plane shimming-radio frequency dual-purpose coil movable type integrated test platform aims to solve the problems that an existing test tool is fixed in structure, insufficient in adaptability, incapable of adapting to a dual-plane shimming coil stacking structure and lack of dynamic adjusting capacity, and consequently the test precision is limited. A test platform bottom plate is arranged at the bottom of an inner cavity of the magnetic shielding barrel, a left coil clamping groove and a left test platform sliding groove are sequentially formed in the left side of the upper surface of the test platform bottom plate from left to right, and a right coil clamping groove and a right test platform sliding groove are sequentially formed in the right side of the upper surface of the test platform bottom plate from right to left; the left side test platform sliding groove and the right side test platform sliding groove support a magnetic field test support upwards, a plurality of test panel switching clamping grooves are distributed in the inner side of the magnetic field test support from bottom to top, and magnetic field test planes can be inserted and positioned in the test panel switching clamping grooves at different heights. The magnetic field testing plane is provided with fluxgate clamping grooves arranged in an array.

The utility model relates to the technical field of wire harness detection devices, in particular to a wire harness on-off detection device convenient to adjust and move, which comprises two transmission units distributed up and down, and the two transmission units are connected and transmitted through a power assembly; wherein at least one mounting frame is connected between the two transmission units, the inner side of the mounting frame is detachably connected with a test panel, and the test panel is rotatably connected with the mounting frame. A user can install the corresponding test panels according to the number of conventional test wire harnesses, after the test ports on the test panels are assembled in advance, when different wire harnesses are tested, the corresponding test panels can be switched to the current station, so that the wire harnesses can be rapidly detected, the test ports do not need to be disassembled and assembled, and the test efficiency is improved. And the detection efficiency is greatly improved.

The invention relates to the technical field of material mechanical property testing, and discloses a pressure-sensitive adhesive tape stripping adhesive force testing device which comprises a stripping strength testing machine, a threaded rod moving mechanism obliquely arranged on the stripping strength testing machine, a force value sensor arranged on the stripping strength testing machine and a testing panel arranged on the stripping strength testing machine. The pressure-sensitive adhesive tape pasting device comprises a test panel and a fixing roller, the test panel is used for pasting a pressure-sensitive adhesive tape, a clamping assembly is arranged above the test panel, the clamping assembly is used for clamping the pressure-sensitive adhesive tape, a connecting piece is arranged on the clamping assembly, and the connecting piece is used for connecting a force value sensor and the clamping assembly. The pressure-sensitive adhesive tape is rolled, so that the rolling force applied to the pressure-sensitive adhesive tape is in a uniform state, the pressure-sensitive adhesive tape can be adhered to the test panel more uniformly, and the accuracy of subsequent adhesive force measurement is guaranteed.

This application discloses an airtightness testing device, belonging to the field of testing. The airtightness testing device includes a housing, at least one fixing buckle, and a sealing gasket. The housing includes a cover plate with opposing first and second surfaces, and the cover plate also has an air inlet. The sealing gasket is located on the second surface and has a first opening communicating with the air inlet. The object to be tested abuts against the sealing gasket. The object to be tested includes a connected test panel and a test body. The test panel has a test hole communicating with the first opening. The test body includes a housing, a telescopic rod, and a test sealing ring. One end of the telescopic rod is located inside the housing, and the other end extends into the test hole. The test sealing ring surrounds the telescopic rod and abuts against the telescopic rod. The test sealing ring is connected to the housing and the test panel. The inner wall of the test hole, the telescopic rod, and the surface of the test sealing ring near the test panel form a test chamber. This application can detect whether there is a gap between the test panel and the test sealing ring.

The invention belongs to the technical field of medical information, and particularly relates to a method and equipment for identifying and auditing repeated subitems of an inspection set and a storage medium. The repeated subitem identification and auditing method comprises the following steps: constructing a specimen grouping database based on a reference group data set; constructing a target group relation library based on the target group data set and the specimen grouping database; after a new set billing instruction is received, a first historical set billing record of the current patient in a first preset time window is obtained, and a repeated item list is determined based on a new set and the first historical set billing record; and on the basis of each repeated item in the repeated item list, calling the target group relation library to judge whether the shared group labels of the repeated items in the new group and the historical group are the same or not, and executing corresponding warning or reminding operation according to a judgment result. According to the method provided by the invention, the de-duplication auditing cost is reduced, and the de-duplication auditing accuracy is improved.

The utility model relates to the technical field of relay protection, in particular to a power system relay protection comprehensive test bench, which comprises a test bench main body, a test panel is fixedly mounted at the top end of the test bench main body, two storage grooves are symmetrically formed in the bottom end of the test bench main body, and sealing doors are rotatably mounted on the storage grooves. By pushing the universal wheels to slide downwards, the experiment table main body is conveniently and quickly transferred, manual carrying is avoided, the carrying efficiency can be improved, meanwhile, the labor cost can be saved, after carrying is completed, the electric telescopic rods are controlled to retract, at the moment, the supporting plates can drive the universal wheels to retract into the movable grooves, and the experiment table main body is conveniently and quickly transferred. The whole experiment table body can make contact with the ground, the stability of the experiment table body can be improved, use of the experiment table body is facilitated, the supporting plate can be fixed through the rotating disc, the load in the supporting process of the electric telescopic rod can be reduced, and long-term use of the electric telescopic rod is facilitated.

The utility model discloses a tooling and equipment for inspecting the size and position of a product, which relates to the technical field of detection tools. The tooling for inspecting the size and position of a product includes: a fixture frame; a mounting guide rail provided on the fixture frame; a product fixing seat provided on the mounting guide rail, the product fixing seat can slide along the mounting guide rail, and the product fixing seat is used to position the product; a test panel provided on the fixture frame, and a size detection column is provided on the test panel, and a through hole for the size detection column to penetrate through the product for qualified detection is provided on the product. The tooling and equipment for inspecting the size and position of a product provided by this application can drive the product to move on the mounting guide rail through the sliding of the product fixing seat. When the size detection column provided on the surface of the test panel can smoothly pass through the through hole on the product, the product is determined to be qualified, otherwise it is a non-conforming product. The detection method is simple, the detection efficiency is improved, and the detection difficulty is reduced.

The invention discloses a method for rapidly milling a composite material test panel. The method comprises the following steps: S1, providing a composite material part and attaching a first adhesive tape to the back surface of the composite material part; s2, providing a flat base plate and attaching a second adhesive tape to the surface of the flat base plate; s3, the first adhesive tape and the second adhesive tape are attached and fixed, so that the composite material part and the flat base plate are connected into a whole; s4, adsorbing and fixing the flat base plate on a milling machine tool, and milling the flat base plate from the front surface of the composite material part to quickly prepare a composite material test plate; a vacuum adsorption platform is fixedly arranged on the milling machine tool, and the face, away from the second adhesive tape, of the flat base plate is adsorbed and fixed through the vacuum adsorption platform. Compared with an existing composite material test panel manufacturing method, the composite material test panel manufacturing method can improve the machine tool utilization rate, improve the composite material test panel machining efficiency, reduce the small test panel milling risk and reduce the risk that one-way belt composite material parts are split, and the manufacturing cost of the composite material test panel can be obviously reduced.

The invention relates to the technical field of wire harness testing, and discloses a current-carrying capacity testing device for a new energy automobile wire harness, which comprises a testing platform and testing jigs, a plurality of testing jigs are detachably mounted on a testing panel of the testing platform, each testing jig comprises an airtight cavity and a conductive probe, the airtight cavity is used for being matched with a to-be-tested wire harness connector, and the conductive probe is used for being matched with the to-be-tested wire harness connector. The wire harness connector is sealed during air tightness detection; and the conductive probe is used for being in contact with a terminal of the wire harness connector and transmitting a signal to the controller so as to carry out an integrated test on the current-carrying capability and the air tightness of the wire harness. According to the current-carrying capacity testing device for the new energy automobile wire harness, integrated testing of the current-carrying capacity and the air tightness is achieved, the testing time is shortened, abrasion and errors caused by multiple times of plugging and unplugging of a wire harness connector are avoided, the testing precision is improved, the integrated testing device facilitates factory deployment, meanwhile, the mode that multiple jigs are arranged in parallel is adopted, and the testing efficiency is improved. And rapid switching of multiple types of wire harness connectors is supported, so that the test efficiency is greatly improved.

An installation template for direct current contactor lead detection comprises a template body, a plurality of wire clamps, a test panel and a wrapping post are arranged on the template body, wire clamping grooves are formed in the wire clamps, a plurality of metal contacts are embedded in the surface of the test panel, and the metal contacts are connected with the wire clamping grooves through leads; a placing groove and a wire taking groove are formed in the upper surface of the template body, a first winding column and a first limiting column are arranged on the front side of the wire taking groove, a second winding column and a second limiting column are arranged on the rear side of the wire taking groove, and a gap allowing a lead to pass through is reserved between the first winding column and the first limiting column. And a gap for allowing a lead to pass through is reserved between the second wrapping post and the second limiting post. The utility model overcomes the defects of the prior art, can effectively ensure the accurate position of the lead, improves the detection efficiency and precision, reduces the damage of the lead, prolongs the service life of equipment, and ensures the reliability of the detection result.

The utility model discloses a fatigue test device for an industrial belt, which comprises a test board, a test panel and a belt wheel assembly, the test panel is vertically arranged on the surface of the test board, the belt wheel assembly is arranged on the front side of the test panel, and the belt wheel assembly comprises a driving belt wheel, a driven belt wheel and a tensioning wheel. A loader, a power mechanism and a tension adjusting mechanism are installed on the back face of the testing panel, the loader is in transmission connection with the driven belt wheel, the power mechanism is in transmission connection with the driving belt wheel, the tension adjusting mechanism is in transmission connection with the tensioning wheel, and an environment box is movably installed on the front face of the testing panel and can cover the outer side of the belt wheel assembly in a sealed mode. According to the utility model, the belt to be tested is installed through the belt wheel assembly on the test panel, the belt to be tested can be driven by the belt wheel assembly to continuously transmit, the environment box and the tension adjusting mechanism are designed, and the belt is tested by simulating real working conditions through the structure, so that the tested data are more accurate.

The invention discloses an aircraft assembly drilling process verification method based on product structural characteristics, and the method comprises the steps: presetting a preassembling scheme based on the product structural characteristics, and adjusting the connection mode and connection spacing of a pre-connection fastener to guarantee the overall stability after preassembling; based on the component assembling scheme, an identification scheme of the pre-assembled fastening nails is reasonably selected and matched; an identification track of the preassembled fastening nail is formulated based on a path optimal principle, and positioning of a product structure form under a global coordinate system is completed; manufacturing indexes of different working condition differences of all hole sites are determined based on aircraft assembly hole manufacturing process correlation parameters; presetting a test working condition based on the manufacturing index of a certain hole site, and enabling the current test working condition to be equivalent to the product working condition; step-by-step optimization is carried out on a hole making process parameter domain based on a test panel test, an optimization result is directionally migrated to product hole making, and process parameter making is completed; and a process strategy is called according to the accumulated information, and hole making of the complete hole making molded surface is completed, so that the correctness of equipment after wire entering is ensured, and the suitability of the process strategy is improved.

The utility model relates to the vacuum test field, and specifically is a kind of vacuum leak detection test system for aircraft wastewater system, including air pipe, input pipe, nitrogen pressure reducer, pressure regulating filter, vacuum generator, pressure measuring tube and test tube, and the both ends of air pipe are connected with first quick coupling and second quick coupling respectively, and the both ends of input pipe are connected with second quick coupling and third quick coupling respectively, and third quick coupling is also connected with nitrogen pressure reducer, and the both ends of pressure regulating filter are connected with second quick coupling and vacuum generator respectively, and vacuum generator is connected with silencer and the pipeline of aircraft wastewater system respectively, and the both ends of test tube are connected with adapter and fourth quick coupling respectively, and the both ends of pressure measuring tube are connected with air pipe pipeline and vacuum gauge, and air inlet stop valve, exhaust stop valve and pressure regulating valve are installed on test panel.The product can select gas source according to working condition, reduce use cost, and the size of vacuum degree is accurately regulated by pressure regulating valve, and precise regulation value can be obtained.

This invention relates to the field of material mechanical property testing technology, and discloses a pressure-sensitive adhesive tape peel adhesion force testing device, including a peel strength tester, a threaded rod moving mechanism inclinedly arranged on the peel strength tester, a force sensor arranged on the peel strength tester, a test panel arranged on the peel strength tester, the test panel being used for the adhesion of pressure-sensitive adhesive tape, a clamping assembly arranged above the test panel for clamping the pressure-sensitive adhesive tape, and a connector arranged on the clamping assembly for connecting the force sensor and the clamping assembly. This invention, through the setting of a fixed roller, can roll the pressure-sensitive adhesive tape during the process of pasting it onto the test panel, ensuring that the roller pressure on the pressure-sensitive adhesive tape is in a uniform state, thereby enabling more uniform adhesion between the pressure-sensitive adhesive tape and the test panel, ensuring the accuracy of subsequent adhesion force measurement.

The invention discloses a marine atmospheric environment corrosion evaluation system and method, and the method comprises the steps: selecting a test plate made of a material which plans to research a corrosion rule, carrying out a marine atmospheric environment corrosion test in a selected sea area according to a set test period, and testing the weight loss W1 and the corrosion rate V1 of the test plate after the test is finished; the method comprises the following steps: selecting a test panel which is completely the same as a marine atmospheric environment corrosion test, simulating the chloride ion concentration and temperature and humidity change of a test sea area in a laboratory, carrying out a marine atmospheric accelerated corrosion test, and regularly carrying out weight loss WX and corrosion rate VX tests on the test panel until the weight loss WX and corrosion rate VX values are equal to the weight loss W1 and corrosion rate V1 values, recording test endpoint time; and according to a laboratory marine atmosphere accelerated corrosion test result, the applicability of the anti-corrosion material and the anti-corrosion scheme is evaluated. The method can be used for effectively evaluating the reliability of the product marine transportation process anti-corrosion scheme, and a method is provided for product marine transportation process anti-corrosion scheme design and effect verification.

The utility model relates to control switch technical field, concretely relates to a portable installation's light control switch, including wall, test panel, light detection subassembly and plug detection subassembly. The utility model, through setting up upper suction accessory, lower suction accessory and magnetic attraction piece, when appearing to light circuit control exception, make upper suction accessory and lower suction accessory on the light access unit stick two magnetic attraction pieces on the socket bottom box side wall, make two magnetic attraction pieces can through the magnetic attraction of upper suction accessory and lower suction accessory, temporarily magnetically attract test panel on the magnetic attraction piece of socket bottom box and wait for the staff to carry out the trouble shooting of light circuit, when light circuit trouble shooting can be controlled by light switch switch normally, directly take test panel outward and lift, can realize the dismounting from the socket bottom box side wall, make test panel more relaxed and convenient when installing and dismounting to the light circuit detection of a plurality of socket bottom boxes, and the practicality is higher.

The application relates to a method for testing the in-plane shear performance of a sandwich structure composite material, comprising the following steps: preparing a test piece with a sandwich structure, wherein the test piece with the sandwich structure comprises a core plate, non-test panels and test panels adhered to upper and lower end surfaces of the core plate; bonding three reinforcing plates on the test panels at intervals along the width, which are respectively a middle reinforcing plate and two side end reinforcing plates, gaps are arranged between the middle reinforcing plate and the corresponding side end reinforcing plates, the middle reinforcing plate and the two side end reinforcing plates extend out of the test panel in opposite directions, wherein a first connecting hole is arranged at the extending end of the middle reinforcing plate, and clamp connecting holes are arranged at the extending ends of the two side end reinforcing plates; saw slits corresponding to the upper and lower gaps of each gap are arranged on the non-test panels, and the depths of the saw slits extend into the test piece; and the problems of a complex test fixture and low test efficiency of a civil aviation cabin floor test are solved through the above design.

The invention provides an automatic detection method and equipment for a coating test panel, and the method comprises the following steps: controlling a material taking assembly to take the test panel from a stock bin through a robot, and positioning the test panel on a test board; a differential detection process is executed according to the type of the test plate, and the detection process comprises the steps that if the test plate is a standard sample plate, detection assemblies are switched according to a preset sequence to conduct film thickness detection, gloss detection, color detection and particle detection; if the test panel is a daily panel, identifying a basic two-dimensional code preset on the back of the daily panel through a code scanning assembly to analyze the detection item combination, and dynamically scheduling a corresponding detection assembly to execute detection based on an analysis result; and a unique two-dimensional code is generated based on the detection result, the unique two-dimensional code is printed to the back of the test plate through a code spraying assembly, and the test plate is sorted to the corresponding discharging bin according to the detection result. The detection precision can be improved, and quality data can be traced in the whole process.

A biomedical detection panel is provided. The biomedical detection panel includes a plurality of detection pixels. Each detection pixel includes a first transistor, a voltage stabilizing module, a detection electrode, and a voltage selection module. The first transistor has a first terminal to receive a detection driving signal, a control terminal to receive a switching signal, and a second terminal. The voltage stabilizing module is coupled to the second terminal of the first transistor to provide a detection control signal. The voltage selection module is coupled to the voltage stabilizing module and the detection electrode to receive the detection control signal and to receive a direct current (DC) level and an alternating current (AC) signal. The voltage selection module selectively provides one of the DC level and the AC signal to the detection electrode based on the detection control signal.

The present application provides a kind of paint test panel automatic detection method and equipment, the method includes the following steps: test panel is extracted from bin by robot control material taking assembly, and test panel is positioned in test table;According to test panel type, difference detection process is executed, detection process includes: if test panel is standard sample, then switch detection component according to preset order to carry out film thickness detection, gloss detection, color detection and particle detection;If test panel is daily board, then the basic two-dimensional code pre-set on the back of daily board is identified by scanning code component to analyze detection item combination, corresponding detection component is dynamically scheduled based on analysis result to execute detection;Based on detection result, unique two-dimensional code is generated, and unique two-dimensional code is sprayed to the back of test panel by code spraying component, and test panel is sorted to corresponding discharge bin according to detection result.The present application can improve detection precision, realize quality data whole process traceability.

The invention discloses an agricultural planting water environment influence simulation system, and belongs to the technical field of planting water simulation experiments.The agricultural planting water environment influence simulation system comprises a test panel, a test column and a water supply tank, and the water supply tank is installed on the test panel through a supporting frame; a first pipeline, a second pipeline, a third pipeline and a fourth pipeline are sequentially and fixedly mounted on the water supply tank, a mixer is fixedly mounted on the second pipeline, and an alternator is fixedly mounted on the third pipeline. Meanwhile, tap water and reclaimed water are used for irrigating crops in one test column in turn through an alternator, crop potting tests are carried out by taking the tap water as a contrast, and influences on crop growth, yield and quality in different irrigation periods are monitored; secondly, comparing the influence of the reclaimed water on the growth, the yield and the quality of the crops in different irrigation modes;

The application discloses a reflection wave weakening test board based on acoustic black hole effect, which comprises a test board body and a spiral acoustic black hole arranged at the edge of the test board body and used for weakening the reflection signal of the boundary. The application can weaken the reflection wave of the edge of the test board, and is safe and reliable in use, small in space occupation and simple in structure.

The utility model discloses a test fixture for a blood sample collection module, particularly relates to the field of test fixtures, and comprises an electric control shell, a test panel is arranged in the center of the top of the electric control shell, a test needle plate is arranged on one side of the test panel, and the top of the test needle plate is connected with a test object carrier plate. One side of the test object carrier plate is provided with test interfaces, one side of the test panel is provided with a floating plate, the middle parts of the two groups of plugging slide rails are provided with push-in cylinders, the upper surface of the floating plate is provided with data transmission modules, and one side of each data transmission module is provided with a floating plug; according to the utility model, the push-in cylinder drives the floating plate to perform translational motion, and the floating plate moves to drive the data transmission module and the floating plugs to perform translational motion, so that the plurality of groups of floating plugs are inserted into the test interface to perform line test, the effect of performing synchronous test on the plurality of groups of blood sample collection modules is realized, and the test efficiency is improved.