及电路

This paper discussed the methods and the factors to design a system to measure neutron flux density ,and introduced the new measuring system used in mini-neutron-source-reactor built in Shenzhen University,that was reformed to dual control bars system just two years ago.

介绍了对中子注量率密度的一般检测方法及要点并介绍了双棒联动改造后深圳大学商用微型研究堆控制系统中的中子注量率密度检测系统，叙述了在设计方面的考虑，给出了具体的电路原理图及其参数。

EL company owned by the production technology is imported from the United States, and engineering and technical personnel after several years of continuous research and development, improve and increase the current production of luminescent EL-has been widely used in watches and clocks, backlight, LCD backlight modules, Instruments, meters panel backlighting, remote control, PDA, cell phone backlight, fire exit routes backlight, night-light, and through the surface rich in color and flashing circuit to become animation and advertising, the ideal gift toys decorated backlight.

公司所拥有的EL生产技术是从美国引进，并经过工程技术人员数年的不断研发、完善和提高，目前所生产的EL发光片已被广泛应用于钟表背光、各种模块液晶显示背光、仪器、仪表面板背光、遥控器、PDA、手机背光、消防出口通道背光、夜间长明灯，并通过表面丰富的色彩及闪动电路达到动画效果而成为广告、玩具礼品的理想装饰背光源。

The "Hardware" part describes the structure of system , the design of the interface circuit and noise immunity .

硬件部分介绍了系统的结构、接口电路的设计及抗噪设计，软件部分则介绍了主程序、分选程序和分选机系统误差统计校正子程序的设计，并介绍了误差统计校正的原理与方法。

On the basis of the current situation and developing trend of modeling methods of DC-DC switching converters discussed, a circuit averaging method is put forward to model nonideal basic converters operating in the continuous conduction mode.

在对 DC-DC 开关变换器建模方法的现状及发展趋势进行深入分析的基础上，提出了一种非理想基本变换器在连续工作模式下的电路平均建模方法。

This paper analyzes the numerical control DC constant current source system design needs, expounded numerical-controlled DC constant current source of the hardware and software design principles, instructed the numerical-controlled DC constant current source circuit of the module function and design ideas, completed the numerical-controlled DC current source of all design, and the circuit is complete and procedures.

本文主要分析了数控直流恒流源系统的设计需求，阐述了数控直流恒流源的软硬件的设计原则，介绍了数控直流恒流源各模块电路的功能及设计思路，完成了数控直流恒流源系统的全部设计，给出了完整的电路图和程序。

Bi-conversion UPSs operate in serial regulating work mode, on-line interactive UPSs in parallel regulating work mode, and DP300E circuits in serial-parallel regulating work mode which improve the performance of single-conversion and bi-conversion UPSs, and make themselves of high efficiency, stability and reliability.

双变换UPS工作于串联调整工作模式，在线互动式UPS工作于并联调整模式，而DP300E的电路则工作于串、并联联合调整的模式，提高了双变换和单变换UPS的性能，使之具有很高的效率、稳定性及可靠性。

The systemic design including hardware design and software design,is introduced in this paper.Analyse the reconfigurable capability and give a concretely circuit and appearance design. We design the test program of instrument and two working model about on-line working and off-line working.It is expedient to operate by friendly user-machine interface.

本文详细的介绍了该仪器的整体设计，分析了其重构性能，给出了该仪器的具体电路设计及外观设计，系统的设计了该仪器工作的测试程序，并且设计了联机和脱机两种工作方式，均具有友好的人机界面，方便用户的操作。

Practical application of one-chip computer in heat-treatment furnace is listed,and detailed introduction is given to the compositionsand the main functions of temperature control system.

本文列举了单片机在锅炉中的一个实际应用，并对设计的温度控制系统的组成及主要电路的作用进行了详细的介绍。

Nowadays, the open-loop control system is widely used in the control of economic type NC working table.

提供了一种经济型数控工作台闭环控制的解决方法，并给出了控制电路及算法，有效地提高了数控工作台的精度。

In this paper,the standard of RS 485 bus and its applications in an channel detecting and accident switching are introduced,and in the situation of overfull load notes or overlong transmission distance,a repeat circuit of RS 485 is proposed.

介绍了RS 485总线规范及其在远动信道监测及故障倒换中的应用，并针对负载节点过多或传输距离长的特点，提出了一种RS 485中继电路。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐