和电路

Based on method of moment and field-circuit coupling theory, nodal method of analysis in circuit theory is applied to the power parameters calculation of grounding grids. The inner self-resistance and self-inductance of conductors, mutual inductance between conductors, and displacement current of conductors are taken into account.

基于矩量法和场路结合的思想，将电路中的节点电压法用于接地网工频参数计算中，该方法不仅考虑了接地导体的内自阻抗和自感，而且考虑了导体间的互感，导体的位移电流。

The influence of the metal shadow mask on discharge was considered as well. A stable simulation environment and simulation process had been established.

作者建立了一个稳定可靠的仿真环境和灵活有效的仿真方法，通过比较实验电路波形和仿真波形，验证了本论文所提出的等效电路模型的正确性。

This article has introduced the oscilloscope signal conditioning circuits and ultra-high-speed parallel ADC and the realization of the basic principles of system approach.

本文先后介绍了示波器的信号调理电路和超高速并行ADC系统基本原理和实现方法。

A phase-lock circuit composed of special phase-lock CMOS chip CD4046 and frequency dividing chip CD4040 is designed,with a simple extemal integral loop f

用CMOS专用数字锁相芯片CD4046（内部集成有鉴相器和压控振荡器）和分频芯片CD4040构成了实际锁相电路。

The smart terminal control with a real-time detecting function has been developed successfully. The design of the general function frames and concrete control circuits of smart terminal control of air-raid siren control system are based on MSP430F149, the software design of the whole system is described in the thesis.

本文重点论述了基于MSP430F149的人防警报控制系统智能化执行终端的总体功能设计和具体原理电路设计，以及上下位机软件的设计和实现方法。

It consists of the selection of sphygmus sensors; the choice and utilizations of USB interface chip, connection of circuit; the detailed plan on device firmware, device driver programs and applications; etc. A necessary description of USB 1.1 protocol is also presented here.

包括脉搏传感器的选用；微控制器和USB 接口芯片的选择、应用以及电路的连接；设备固件、设备驱动程序和应用程序的具体设计等。

The intelligent power module, the detect circuit of current and motor speed, DSP and the program implement of the function module of the squirrel-cage induction motor vector control system are all presented particularly in this paper.

文中对智能功率模块 IPM、DSP 芯片、电流和转速检测电路以及异步电机矢量控制系统各个功能模块的 DSP 编程实现都进行了详细的介绍，重点介绍了模糊算法和空间矢量算法的 DSP 编程实现方法。

An early type of widespread writable random access memory was the magnetic core memory, developed in 1949-1951, and subsequently used in most computers up until the development of the static and dynamic integrated RAM circuits in the late 1960s and early 1970s.

早期类型的广泛写入随机存取记忆体是磁芯内存，发达国家在1949至1951年，后来用在大多数计算机直到发展的静态和动态RAM的电路集成在上世纪60年代末和70年代初。

A diode and capacitor circuit isolates the oscillator voltage from the main energy storage capacitor.

一个二极管和一个电容电路用来将振荡器电压和用来储存能量的大电容隔离开来。

Taking frequency conversion of semiconductor transistor as an example, the basic principles and some problems related are introduced in the article, integrating emitter-injected frequency conversion circuit of transistor, which is often used in superheterodyne to discuss about it.

分析了变频的基本原理和设计变频器的有关注意问题；从三极管输入回路和输出回路的信号入手，讨论了超外差式收音机常用的变频电路的工作原理。

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。