求高手翻译，论文摘要，不要翻译软件，语法一定要准确、要够专业。

本设计是基于USB的数控实验系统接口设计。接口中使用了51单片机，对单片机进行编程，使单片机可以接收来自计算机USB接口的控制指令。通过程序转换成相应的数控实验系统的控制指令发送给数控实验系统，完成相应的控制操作。
This design is based on the NC experimental system of USB interface that utilizes 51 monolithic integrated circuits. The monolithic integrated circuits are programmed to receive control commands from the USB interface of the computer. The relevant control commands of the NC experimental system transformed through the programming are sent to NC experiment system so that the relevant control operation is accomplished.

基于USB数控实验系统的接口设计是硬件与软件方面进行同步设计。硬件部分主要由CH372芯片，STC89C51RC单片机，DS3487M芯片，以及单片机下载电路等组成。软件方面主要包括使用Visual Basic设计数控铣床的的简易测试程序，Visual C++ 环境下头文件的设计，单片机端的程序设计。单片机端使用汇编语言进行软件设计。
The above-mentioned design is a synchronous design of hardware and software. The hardware is mainly made up of CH372 chip，STC89C51RC single-chip microcomputer，DS3487M chip and the downloaded circuit of single-chip microcomputer. The software used are simple test program of Visual Basic design of numerical control milling machine, the design of header files under Visual C++ environment, and the program design of single-chip microcomputer port which is designed by using assembly language.

为了便于扩展和更改，软件的设计采用模块化结构，使程序设计的逻辑关系更加简洁明了。所有硬件电路及程序设计完成后，已在实验室测试通过，完成预期的要求。
In order to facilitate extension and modification, the software design adopts a modular structure, so that the logical relation of the design is clearer and more concise. The completed hardware circuits and program design had passed the lab tests and fulfilled the expected requirements.

【英语牛人团】

The design is based on USB CNC Experiment System Interface design. Interface used in51 MCU, MCU programming, the single chip microcomputer can receive from the computer USB interface control instruction. The program is converted into the corresponding numerical control experimental system control command is sent to the numerical control experimental system, complete the corresponding control operation.
Based on the USB CNC experiment system interface design hardware and software aspects of synchronous design. The hardware part is mainly composed of CH372chip, STC89C51RC chip, DS3487M chip, and the chip download circuit etc.. Software mainly includes the use of Visual Basic design of CNC milling machine simple test procedures, Visual C++ head document design, single-chip end procedure design. Single end the use of assembly language for software design. In order to facilitate the expansion and the change, the software design uses the modular structure, make the logic relation of designing program more concise. All the hardware circuit and the program design is complete, have been tested in the laboratory through, is expected to complete a request.

This design is the design of numerical control experimental system based on USB interface. Using 51 single-chip computer interface, program the microcontroller, MCU control directives can receive from the USB connector on the computer. By program transformation into the corresponding numerical control experimental system of control orders sent to the numerical control experimental system, complete the appropriate control actions.Design of numerical control experimental system based on USB interface is synchronized in hardware and software design. Hardware section by CH372 chip, STC89C51RC SCM, DS3487M chip, as well as single chip download circuits and other components. Software includes design CNC milling machine using Visual Basic simple test procedures, Visual C++ environment design of the below files, the monolithic machine programming. Single chip-design software using assembly language. For ease of expansion and change, the software design is modular in structure, the program logic more concise. All hardware and procedures after the design is complete, has been laboratory tested by, and expected to complete the requirements. Additional:

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The design is based on USB CNC Experiment System Interface design. Interface used in51 MCU, MCU programming, the single chip microcomputer can receive from the computer USB interface control instruction. The program is converted into the corresponding numerical control experimental system control command is sent to the numerical control experimental system, complete the corresponding control operation.
Based on the USB CNC experiment system interface design hardware and software aspects of synchronous design. The hardware part is mainly composed of CH372chip, STC89C51RC chip, DS3487M chip, and the chip download circuit etc.. Software mainly includes the use of Visual Basic design of CNC milling machine simple test procedures, Visual C++ head document design, single-chip end procedure design. Single end the use of assembly language for software design. In order to facilitate the expansion and the change, the software design uses the modular structure, make the logic relation of designing program more concise. All the hardware circuit and the program design is complete, have been tested in the laboratory through, is expected to complete a request