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this paper introduces a lossless detected circuit system.firstly,system gathers slender infrared signal with transducer,then amplifies them with low noise.through voltage comparator circuit,transforming simulation objection signals to digital signals.finally,transforming transport landscape orientation and portrait to single chip processing.in design of pcb,the amplifying of quadruplet signal,filter,voltage comparator decree and and logic function are manufactured in one board.if the diameter of workpiece is long,it can add multiple the number of transducer of four,to wide its range of practice,disposing circuit only need one module.

摘 要：介绍了一种无损检测的电路系统。系统首先利用传感器采集到微弱的缺陷信号，再将缺陷信号进行低噪声放大，然后通过电压比较判决电路将模拟缺陷信号变换成数字信号，最终将横、纵两路的输出信号送至单片机处理。在pcb设计中，将四路信号的放大、滤波、电压判决以及与逻辑功能做在一块板上，若被检测工件的直径较大，可以将传感器的个数以四的倍数增加，处理电路只需增加一个模块。

In passive balun, we implement the Rat-Race and Marchand balun by using the TSMC 0.35 um CMOS technology process in circuit design. Because the passive circuit always occupy much size in the integrated circuit. So we miniaturized the Rat-Race and Marchand balun in design.

在被动电路分合波器中，利用了TSMC 0.35 um COMS制程制作Rat-Race与Marchand balun，因为在IC制程上被动电路往往占据了很大的面积，所以更进一步将上述两者分合波器微小化，以利於积体电路的实现。

Power system ; Three-phase circuit ; Nonsi-nusoidal circuit ; Unbalanced circuit ; Instantaneous reactive power

电力系统；三相电路；非正弦电路；不平衡电路；瞬时无功功率

During the whole short-circuit depolarization process, the centers of positive charges and negative charges in the sample shifted to their nearer electrodes, respectively, whereas behaviors different from the short-circuit depolarization were seen in the later stage of the open-circuit depolarization, that is, the positive charges captured in the deep surface layer traps were detrapped and shifted to the rearer electrode.

在整个短路退极化过程中，试样中正、负电荷的中心分别向距它们较近的电极迁移，而在开路退极后期则表现为与短路时不同的行为、被表层深陷阱再俘获的电荷脱阱后向背电极迁移。

The wireless receival circuit receives the voice identification signal transmitted from the voice remote circuit and then control the robot by mechanic executable circuit to achieve the action of robot.

CCD摄像头采集视频信号，通过微波发射器件发射；无线接收电路接收声音遥控电路发送来的声音识别信号，控制机器人由机械执行电路实现机器人动作。

The analysis of the weak signal circuit, amplifying circuit of the signal and power circuit in the thermal conductivity detector has been done, and the characteristic of the circuits with the rhenium tungsten filament is designed.

针对气相色谱热导检测器的弱信号失真和电源不稳定问题，研究与设计热导检测器的弱信号测量电路、信号放大电路以及电源电路。

A support structure is attached to the front or back side of a flexible circuit by direct mounting to the flexible circuit flat ribbon cable, thereby providing a stress-free region of the cable in which the flexible circuit electrical components can be mounted.

采用直接安装于挠性电路扁平带状电缆上的方法将一个支承结构固定在挠性电路的前侧或者后侧，因而在电缆上形成一个无应力区，在该区域内就可以安装挠性电路的电气元件。

Heat treatment techniques which simulate the welding process of electromotor short circuit ring and short circuit bar are designed based on the actual thermal circulation on the short circuit bar.

根据电机转子导条和端环焊接过程中导条所经历的实际热循环过程，设计了模拟焊接过程的热处理工艺，对大功率异步牵引电动机转子铜合金导条和端环的焊接热影响区的组织和性能进行了研究，讨论了性能和组织的变化规律及其原因。

The open design methods, user-friendly according to our own needs, for various extensions, and includes common interfaces. mainly covers the right ring tone detection circuit design, automatic Abstract hook, Transceivers serial communication theory, AT89C51 control circuit characteristics of the structure and principle C language of communication microcontroller programming software design; Due to the communication process interference factors exist, Therefore, the circuit design using the interference method.

采用开放式的设计方法，便于用户根据自身需求，进行各种扩展，包含常用接口，主要包括对振铃音的检测电路的设计，自动摘挂机，收发器串行通信的设计，控制电路AT89C51单片机和固态继电器，用C语言实现单片机下的软件编程，由于考虑到通信过程中存在干扰因素，所以对电路采用抗干扰设计的方法。

This article trend research and current situation of computing technology analyze in survey, through to simple network familiarity that trend calculate, take circuit of simple equivalence as an example, carry on circuit voltage and calculation that power loss of the first part and the concluding paragraph mainly, and then regard a ring network circuit as the main example and carry on the detailed trend to calculate, calculate all nodal voltage power losses, use ATP software to carry on artificial calculation with this example again, it's a pity ATP software emulation has not succeeded.

该文在综述了潮流计算方法的研究和现状分析，通过对简单网络潮流计算的熟悉，主要以简单型等值电路为例进行电路首尾的电压和功率损耗的计算，再以一环网电路为主要例题进行详细的潮流计算，计算各节点的电压功率损耗，再以此例题用ATP软件进行仿真计算，可惜ATP软件仿真没成功。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。