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358results about How to "Quick debugging" patented technology

Self-disturbance control method for permanent magnet synchronous motor

The invention provides a self-disturbance control method for a permanent magnet synchronous motor, and belongs to the technical field of permanent magnet synchronous motor control. The method comprises the steps of: designing a hyperbolic tangent function expansion state observer, adopting the saturation characteristics itself of the hyperbolic tangent function to effectively suppress a differential peak appearing in a traditional expansion state observer so as to improve the system control performance. The non-linear feedback control rate based on the new adaptive sliding mode control is proposed which is characterized by designing a new adaptive shifting index approach law which introduces a first-order norm of the state variable, and an approaching speed is adaptively regulated according to the distance of the state variable from the balance point to reduce the dependence of the self-disturbance control on the parameter robustness so as to achieve the high-precision and high robustness control of a permanent magnet synchronous motor. When the system is disturbed and a load fluctuates, the rotation speed is rapidly tracked, the response speed of the system is improved, the systemovershoot and the steady state static difference are reduced, and the system robustness is greatly enhanced.
Owner:JIANGSU UNIV

IPv6 (Internet protocol version 6) based electricity information collection system and method

The invention relates to an IPv6 (Internet protocol version 6) based electricity information collection system and method. The electricity information collection system comprises intelligent measuring devices, an intelligent collecting router and a main collection station. The main collection station is in end-to-end communication with the intelligent measuring devices through the intelligent collecting router; the intelligent measuring devices in a local network are in end-to-end communication. The method includes that 1), the intelligent collecting router collects control instructions issued by the main collection station; 2), the intelligent collecting router forwards the control instructions to the intelligent measuring devices; 3), an intelligent electric meter acquires the control instructions and collects data prior to returning to the intelligent collecting router; 4), the intelligent collector router selects route modes; 5), the intelligent collecting router collects and stores measurement data; 6), the intelligent collecting router forwards the measurement data to the main collecting station.
Owner:STATE GRID CORP OF CHINA +3

Method and system for fast application debugging

Specific tasks associated with debugging are performed in the background, prior to a user of an application development tool invoking the debugger. The tasks including (1) starting a hosting process, (2) loading a hosted runtime environment (e.g., .NET runtime) in the process, and (3) attaching a debugger to the hosting process, are performed in the background before the user commences debugging. Once the user invokes the debugger, the user's application is executed and debugged. Thus, the perceived time to start debugging is greatly reduced.
Owner:MICROSOFT TECH LICENSING LLC

White car body static stiffness restriction device and static stiffness detection method

The invention discloses a white car body static stiffness restriction device of a passenger car and a static stiffness detection method. The device is characterized in that: one side of a front bearing support is provided with a pressure transducer and a hydraulic jack, a plurality of displacement sensors are arranged at the periphery of the white car body bottom surface; the front bearing support comprises a front rack, a T-shaped rack, and a I-shaped guide rail, wherein, the end portion of the front rack is connected with the very center of a crossbeam of the T-shaped rack through bolts and nuts, the crossbeam of the T-shaped rack is arranged at the left and right side of the white car body, and the lower side of the crossbeam is provided with the hydraulic jack; the bottom of the T-shaped rack is connected with the bottom of the front rack through a pin roll and a split pin; the upper surface of the crossbeam of the T-shaped rack is symmetrically provided with I-shaped guide rails; a torque value of the applied load is divided by a twisting angle to calculate a twisting stiffness, and the actual value of the load is divided by a car body deformation displacement to obtain a bending stiffness. According to the invention, the efficiency of various vehicle tests is increased, and the device cost is obviously reduced on the premise that the test accuracy is guaranteed.
Owner:JIANGSU UNIV OF SCI & TECH

Verification system and method of sequential control circuit

The invention provides a verification system and method of a sequential control circuit. The verification system of the sequential control circuit comprises a field-programmable gate array which is used for setting up the sequential control circuit to be verified and an IIC bus controller. The IIC bus controller is connected to the sequential control circuit and is used for receiving testing instructions from an IIC bus debugging interface and analyzing the testing instructions, and reading-writing operation instructions generated by analyzing are sent to the sequential control circuit. The sequential control circuit receives and executes the reading-writing operation instructions. The verification system further comprises the IIC bus debugging interface which is connected to the IIC bus controller, and the IIC bus debugging interface receives the input testing instructions and transmits the testing instructions to the IIC bus controller. According to the sequential control circuit verification mode based on the field-programmable gate array, the IIC bus controller of hardware is achieved, soft supporting is of no need, a CPU module is of no need, and a quick and convenient debugging method is achieved.

Debug method, device, mobile terminal, server and system for mobile webpage

The invention provides a debug method, a device and system, a mobile terminal, and a server for a mobile webpage. The debug method comprises sending debug requests to the server through a network channel. The debug requests comprise operating parameters of a target webpage pending to be debugged and operating environment information of the target webpage. A debug command returned from the server is received, and the debug command is generated from the operating environment information and the operating parameters. The debug command is executed and the execution results are returned to the server. According to the debug method, the device and system, the mobile terminal, and the server for the mobile webpage, the efficiency of the webpage debug is greatly improved.
Owner:LETV INFORMATION TECH BEIJING

Big data processing framework orchestration system and method based on hybrid cloud platform

The invention discloses a big data processing framework orchestration system and method based on a hybrid cloud platform. The system comprises an orchestration service module, a hybrid cloud management module, an infrastructure resource module, a data analysis module, a data processing module, a data storage module and a data integration module, wherein the orchestration service module mainly comprises a visual interface module, a service catalog module, a process executor, a resource optimization module and the like. According to the scheme of the invention, the hybrid cloud management platform can be flexibly dispatched, users can be supported to complete the orchestration and execution work of the overall framework and subdivided tasks of big data processing through various intuitive operation forms such as a mobile terminal interface, and the framework needs to meet the fast iteration requirements of the users in the field of big data processing.
Owner:ECCOM NETWORK SYST CO LTD

Numerical control program post-processing method for five-coordinate linkage machine tools

The invention discloses a numerical control program post-processing method for five-coordinate linkage machine tools, which includes the following steps: (1) a machine tool geometric error compensation parameter method is adopted to compile a numerical control program, so that codes can be universally used on machine tools with like systems; (2) the numerical control program points generated by the machine tool software are reversely calculated into the points in a programming coordinate system, the points in the programming coordinate system are then normally calculated into machine tools with other systems, and therefore the codes are universally used on machine tools with various systems. The method solves the problem that programs complied in the conventional mode cannot be universally used, and also solves the contradiction between the RPCP (Rotation Around Part Center Point) and RTCP (Rotation Around Tool Center Point) programming modes and the conventional program-debugging habit of workshop workers, debugging is simple, rapid and reliable, and mistakes are prevented.
Owner:DONGFANG TURBINE CO LTD

Full-automatic assembling machine of bearing retainer

The invention relates to an assembling device of a bearing retainer, in particular to a full-automatic assembling machine of a bearing retainer, which is characterized in that a ball gathering upper die and a ball dividing upper die of a steel ball gathering and dividing device are sequentially installed on a steel ball gathering and dividing support and connected with an air cylinder in the steel ball gathering and dividing support; the lower part of the steel ball gathering and dividing device is equipped with a front reciprocating motion device, the front reciprocating motion device is installed on a lower operating platform by retaining plates on both ends; a semi-finished product waste device is positioned under an upper retainer blanking device in the same station with the upper retainer blanking device; a nailing die device, a nail inspecting die device, a rivet riveting device and a riveted inspecting device are sequentially installed on a die installing support, the lower part is equipped with a back reciprocating motion device, the back reciprocating motion device is installed on the lower operating platform by the retaining plates on both ends. The assembling device has the advantages of good assembling quality and high assembling speed; and the unqualified products can be automatically detected and removed.
Owner:SHANDONG XUNJIE PRECISION EQUIP

Method for producing a hydropower plant

Method for producing a device for obtaining electrical energy from hydropower and a method for modifying a dam, in which, at a remote production site, at least two turbine-generating units, comprising a turbine and a generator connected to it, are produced, at a remote production site at least two turbine-generator units are connected to one another to form at least one module comprising at least two turbine-generator units, at least one module is transported from the production site over a distance to the site of use by a transport, and, at the site of use, the at least one module is lifted off the transport by a lifting fixture and is moved into a position which is provided for its operation. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
Owner:VA TECH HYDRO

Log data processing method and device

The invention is suitable for the field of information processing and provides a log information processing method and device. The method comprises the following steps: obtaining the log information of an application program in terminal equipment; sending the log information of the application program in the terminal equipment to a remote server with the development environment of the application program through a log remote output service, connected with the remote server through a network, in the terminal equipment, and thus enabling the remote server to track and / or abnormally locating the running status of the application program in the terminal equipment according to the log information of the application program. The method sends the log data of the application program in terminal equipment to the remote server with the development environment of the application program through the log remote output service, does not need the development environment of the application program to be included in the terminal equipment, is not limited by the distance between the terminal equipment and the remote server, and can conveniently and quickly maintain and debug the application program in the terminal equipment.
Owner:TENCENT TECH (SHENZHEN) CO LTD

Automatic transmission device for reshipping quartz boat

The invention relates to an automatic transmission device for reshipping a quartz boat, solving the problems that the traditional manual operation has poor reliability and low efficiency, the existing transmission device is constrained by the structure to affect the moving range, and the like. The automatic transmission device comprises a frame, a lifting arm, a gripper mechanism and an electric control device and is characterized in that the lifting arm is connected with an active rotating arm and a passive rotating arm on the lifting arm to be with the gripper mechanism to form a four-link adjusting mechanism. The active rotating arm on the lifting arm is fixed on a transmission shaft driven by an arm rotating motor, and the telescopic arm of the active rotating arm is hinged at one end of the gripper mechanism. The passive rotating arm on the lifting arm is fixed on a driven shaft, and the other end is hinged on the gripper mechanism. The automatic transmission device has the advantages of reasonable design, simple transmission structure, wide moving range, fast and accurate transmission positioning control, easy installation, convenient debugging and maintenance, significant increase in carrying capacity and safe and reliable operation, improving the operational efficiency of heat treatment equipment, and avoiding damage of silicon wafer and solar cells.
Owner:上海大族富创得科技股份有限公司

Commissioning method and commissioning system

The present application relates to a commissioning method and a commissioning system. The commissioning method comprises: establishing a commissioning mission and sending it to a controller of a HVAC system, the commissioning mission comprising setting at least one test work condition with respect to an object to be commissioned, instructing the HVAC system and a digital twin system corresponding to the HVAC system to respectively operate with the at least one test work condition by the controller of the HVAC system; comparing physical data generated by the HVAC system and digital data generated by the digital twin system, and based on a comparison result, diagnosing the object to be commissioned. The present application can enable fast commissioning and obtain a reliable result.
Owner:CARRIER CORP

Method for producing a hydropower plant

Method for producing a device for obtaining electrical energy from hydropower and a method for modifying a dam, in which, at a remote production site, at least two turbine-generating units, comprising a turbine and a generator connected to it, are produced, at a remote production site at least two turbine-generator units are connected to one another to form at least one module including at least two turbine-generator units. The at least one module is transported from the production site over a distance to the site of use by a transport, and, at the site of use, the at least one module is lifted off the transport by a lifting fixture and is moved into a position which is provided for its operation. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
Owner:VA TECH HYDRO

Coaxiality guide and correction device and guide and correction method using same

The invention discloses a coaxiality guide and correction device and a guide and correction method using the same. The coaxiality guide and correction device comprises a first split body and a second split body, wherein the outer end of the first split body is provided with a first axial connecting part, the outer end of the second split body is provided with a second axial connecting part, the end surface of the inner end of the first split body is provided with a groove, the end surface of the inner end of the second split body is provided with a boss, and a corresponding matching surface is arranged between the groove and the boss. The coaxiality guide and correction device and the guide and correction method using the same disclosed by the invention have the advantages of simpleness and convenience for operation and reduced operation volume of workers.
Owner:HITACHI ELEVATOR CHINA

Distribution automation joint debugging platform for FTU terminal equipment

PendingCN104034980ARealize the simulation joint debugging functionReduce power outagesElectrical testingLoad forecastingStation
The invention relates to a distribution automation joint debugging platform for FTU terminal equipment. The distribution automation joint debugging platform for the FTU terminal equipment is characterized in that voltage and current output of an experimental device is spliced in the input end of a terminal strip; an FTU terminal is connected with the opposite end of the terminal strip through a special connecting wire; a remote control test board on a tester is connected with the input end of the terminal strip which is located in the same side of the voltage and current output; the FTU terminal equipment is provided with a network cable and a special connecting wire, the network cable led from the FTU terminal is in communication connection with a special debugging channel in a distribution automation host station system, and the test port in the FTU terminal is spliced in the end opposite to the end of the remote control test board connected with the terminal strip through a special connecting wire. The distribution automation joint debugging platform for the FTU terminal equipment plays roles of automatically locating a fault, automatically isolating a fault section, automatically restoring power supply for non-fault sections, automatically restoring a power supply mode before supplying power and the like, achieves topology analysis, load transfer, load forecasting, network reconstruction and other advanced applications, has real-time performance, authenticity and reliability and needs to precisely test and jointly debug each FTU terminal.
Owner:STATE GRID CORP OF CHINA +1

Method for processing Java card debugging information

The invention discloses a method for processing Java card debugging information. The method comprises the following steps of: acquiring an instruction, detecting the type of the instruction, if the instruction is an unprocessed setting instruction and an adjuster is a position adjuster, replacing original byte codes corresponding to position information in a Java card program running on a virtual machine by using special bytes, and writing the original byte codes into an event list to generate an event serial number; if the adjuster is a single-step adjuster, setting single-step debugging information, and writing an event into the event list to generate an event serial number; if the instruction is a debugging instruction, acquiring byte codes of the current Java card program running on the virtual machine, and judging whether the byte codes are special byte codes; and if the byte codes are special byte codes, searching the corresponding original byte codes from the event list, replacing the special byte codes with the original byte codes to obtain returned data, otherwise, when the setting of a single-step debugging mark in the event list is judged, acquiring the returned data according to the byte codes. The method is convenient to use and is capable of monitoring and checking the debugging process of a virtual machine in real time.
Owner:FEITIAN TECHNOLOGIES

Application software realization method and device as well as computer equipment

The invention provides an application software realization method and device as well as computer equipment, wherein the method comprises the following steps that an assembly assembler in main engineering receives service information transmitted from service logics in the main engineering; an encapsulation assembly corresponding to a service logic identification in the service information is determined by the assembly assembler according to the corresponding relationship of the preset service logic identification and the encapsulation assembly; in the process that the assembly assembler calls the corresponding assembly according to assembly calling information contained in the corresponding encapsulation assembly, service parameters in the service information are used as configuration parameters of the assembly, and the assembly belongs to sub engineering; the assembly assembler returns an operation result to the corresponding service logic. When the technical scheme provided by the invention is adopted, application software has the characteristics that the expansion is easy, the reconstitution is easy, the debugging is easy, the compilation speed is higher, and the like; the quality of the application software is finally improved.
Owner:BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD

SCD file management method for intelligent substation

The invention discloses an SCD file management method for an intelligent substation, and relates to the technical scheme of improving the functions of version management of SCD configuration software, file comparison, information safety. Unified standard configuration software serves as a precondition, and history element version management and the management of a virtual terminal version enable the efficiencies of debugging, design, operation and maintenance of the substation to be improved.
Owner:NARI TECH CO LTD

Novel light-arm-amplification type high-precision length sensor and measurement method thereof

The invention discloses a novel light-arm-amplification type high-precision length sensor and a measurement method thereof. The length sensor comprises a laser beam I, a laser beam II, a reflection component, a photoelectric detector I, a photoelectric detector II, and a processing system. To be specific, the reflection component is provided with a plurality of reflection surfaces for reflecting the laser beam I and the laser beam II; the cross section of each reflections surface is in a protruding shape; and all reflection surfaces are connected in an end-to-end mode to form a reflection surface array. The photoelectric detector I is used for receiving a laser beam after reflection of the laser beam I by the reflection component and displaying the reflection position; and the photoelectric detector II is used for receiving a laser beam after reflection of the laser beam II by the reflection component and displaying the reflection position. The processing system carried out processing according to the position changing value, received by the photoelectric detector I, of the laser beam I and the position changing value, received by the photoelectric detector II, of the laser beam II, thereby obtaining a displacement value of the measured object. The provided sensor having a simple structure is suitable for measurement of continuous changes of displacements of the measured object and has advantages of high reliability and precision and easy batch production.
Owner:张白

Aircraft operating system, aircraft method control method and aircraft

The invention provides an aircraft operating system, an aircraft method control method and an aircraft. The operating system comprises a first memory cell used for storing aircraft factory configuration parameters; a second memory cell used for storing individual parameters set by users on an aircraft; a data exchange port used for exchanging data relevant to aircraft configuration with an external storage medium; a selection unit used for selecting parameters from the first memory cell and / or the second memory cell and / or the data exchange port; and a control unit used for updating parameters in the aircraft in dependence on the parameter information selected by the selection unit. Accordingly, in controlling different aircraft devices, only by inserting a portable storage medium into the data exchange port can a user rapidly select a suitable operation mode by debugging.
Owner:杨珊珊

Simulation control method and system based on AGV

The invention discloses a simulation control method based on an AGV (automated guided vehicle). The method comprises the following steps: establishing an AGV simulation testing trajectory planning path based on a topological map, and computing to acquire all point coordinates on the planning path and storing the same; establishing a motion model of an AGV chassis, acquiring the mobile state data of the AGV in real time through the movement model, and acquiring the corresponding AGV control reference point state data according to the mobile state data; computing according to preview point length to acquire the angle adjusting amount and the speed adjusting amount on a reference point on the planning path; inputting the angle adjusting amount and the speed adjusting amount into the movementmodel so as to adjust the mobile state of the AGV simulation vehicle. For the trajectory imitation on a virtual vehicle, the trajectory control parameter debugging for the AGV is realized completely based on the simulation, and cannot be limited by the real vehicle or an embedded controller; the debugging is convenient and fast, and the real vehicle hardware fault interference in the parameter setting process is overcome.
Owner:MINGDU ZHIYUN (ZHEJIANG) TECH CO LTD

Radio frequency configuration method, device and terminal

The invention discloses a radio frequency configuration method, device and terminal. The method comprises obtaining hardware parameters in the terminal; according to the hardware parameters of the terminal, obtaining a radio frequency driver corresponding to the hardware parameters of the terminal; driving hardware in the terminal through the radio frequency driver. According to the radio frequency configuration method, by setting a plurality of groups of radio frequency drivers, when having change in radio frequency circuits or needing to adapt to different radio frequency circuits, the hardware in the terminal can be driven by searching for the corresponding radio frequency driver in the plurality of groups of radio frequency drivers without operations of redesigning driving software, burning software or the like, so that the speed of debugging, researching and developing products can be increased.
Owner:YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD

Integrated testing device for inter-wheel sideslip and inter-shaft sideslip of double-steering-shaft automobile

ActiveCN105486519ASolve the problem that the lateral force detection cannot be performed on multi-steering axle vehiclesRealize integrationVehicle wheel testingVehicle frameSteering wheel
The invention belongs to automobile performance testing equipment, and aims to fill a gap in an automatic testing field for the inter-shaft sideslip of a double-steering-shaft automobile, and furthermore realizes simultaneous testing for the inter-wheel sideslip and the inter-shaft sideslip of the double-steering-shaft automobile. The invention provides a testing platform and furthermore provides an integrated testing device for the inter-wheel sideslip and the inter-shaft sideslip of the double-steering-shaft automobile. A tested automobile is driven on the device, and an automobile frame is fixed by two automobile fixing device assemblies. Automobile steering wheels are driven to rotate through a floating road surface simulating mechanism in the testing platform. Side forces which are generated in rotation of the automobile steering wheel are transferred to two side force testing sensors through the floating road surface simulating mechanism, thereby testing the side force of each automobile steering wheel, making technological personnel adjust a transverse pull rod and a longitudinal pull rod of the automobile in a targeted manner according to a testing result, determining a reasonable positioning parameter of the automobile, satisfying Ackermann steering geometry, and finishing testing and adjustment on the side force of the steering wheels of the automobile.
Owner:JILIN UNIV

Embedded scalable virtual machine

The invention provides a scalable virtual machine, which is applied to bottom embedded equipment of the Internet of things. The scalable virtual machine comprises an internal memory management module, an instantaneous compiling module, an interpreter module, a thread management module, a local interface module, a runtime data area and a portable layer module, wherein the portable layer module comprises an internal memory module, a network module, a thread module, a file module, an input / output (I / O) module and the like; and dynamic system configuration is performed through a network, so that cross-platform is realized by the virtual machine. The scalable virtual machine is suitable for the requirements of different levels of embedded equipment at the bottom of the Internet of things, has the characteristics of wide application range, small size, low energy consumption, strong function and flexible configuration, can be widely applied to various embedded equipment at the bottom of the Internet of things, such as machine vision, and has wide coverage field.
Owner:JIANGNAN UNIV

Air conditioning system and method for controlling same

The invention provides an air conditioning system which comprises an outdoor unit, a hydraulic power module, at least one zone module, at least one distribution module group and at least one indoor unit group. Each distribution module group comprises at least one distribution module and is connected with the corresponding zone module, and each indoor unit group comprises at least one indoor unit and is connected with the corresponding distribution module, so that cooling media can flow into the indoor unit groups via the outdoor unit, the hydraulic power module, the zone modules and the distribution module groups and further flow back to the outdoor unit via the distribution module groups, the zone modules and the hydraulic power module after heat is exchanged among the cooling media and indoor air in the indoor units, heat exchange can be carried out in the outdoor unit, and the cooling media can be circulated. The air conditioning system has the advantage that the temperature can be regulated by the aid of the air conditioning system.
Owner:CARRIER CORP

Compact and stable high-peak-power optical fiber output laser

The invention discloses a compact and stable high-peak-power optical fiber output laser. The laser comprises a resonant cavity, pumping sources, a half-wave plate, a polarization beam splitter, a photoelectric detector, a coupling lens, an optical fiber and a collimating lens group, wherein the resonant cavity comprises a Porro prism, a passive Q-modulation crystal, a laser crystal and an output mirror; in the compact and stable high-peak-power optical fiber output laser, the Porro prism, the passive Q-modulation crystal, the laser crystal, the output mirror, the half-wave plate, the polarization beam splitter and the photoelectric detector are arranged in sequence in a light path direction of laser; the pumping sources are uniformly arranged in the center of the laser crystal by using stack arrays; the polarization beam splitter splits the laser into a branch light path perpendicular to the light path; the laser on the branch light path enters the optical fiber through the coupling lens; and the collimating lens group is arranged at the end of the branch light path. According to the compact and stable high-peak-power optical fiber output laser, the stability of a system is ensured, the risk of optical fiber damage is lowered, and the peak power of the optical fiber output laser is indirectly increased.
Owner:NANJING INST OF ADVANCED LASER TECH

Method for treating coking biochemical effluent by microwave-oxidation-coagulation technology

The invention provides a method for treating coking biochemical effluent by microwave-oxidation-coagulation technology, which comprises the following steps of: A, adding a mixed reagent consisting of H2O2 and Fe2+ into the coking biochemical effluent until the mass concentration of hydrogen peroxide in water is between 0.01 and 1 percent, and controlling the pH to between 2.0 to 6.0; B, delivering the mixed liquid into an industrial microwave oven for processing for 5 to 60s; C, regulating the pH value of the mixed liquid to between 6.0 and 6.5 or 7.5 and 8.5, and carrying out oxidation treatment for 1 to 4 hours under an aeration condition that the aeration rate is 10 to 40m<3> / h; D, adding a coagulant into the liquid until the mass concentration of the coagulant in the liquid is betweenone millionth and one hundred thousandth; E, precipitating and separating; F, filtrating the liquid to obtain process effluent for recycling; and G, collecting sludge, separating the liquid from the sludge; and returning the liquid to the step D, and filter-pressing the sludge to obtain sludge cakes. The method realizes recycling, does not discharge sewage, and effectively solves the problem thatpresent coking sewage is difficult to treat and to recycle.
Owner:云南天朗环境科技有限公司

1.064um laser range finder transmitting antenna debugging method and apparatus

The invention relates to an antenna modulating method and equipment for a 1.064 mu m laser distance measurement machine. It aims at the working wave length of the laser distance measurement machine, with parallel light ocular incident coming from the emitting antenna, modulating the focal surface and repetition of the focal surface of the ocular, when the object lens overlaps with the focal surface of the object lens and ocular lens, with beam from the object lens as parallel light.
Owner:中国航空工业第一集团公司第六一三研究所
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