及电路

The principle and composition of the passive hydrogen maser is introduced briefly,and an application of digital frequency modulation and digital servo to the passive hydrogen maser for improving the performance of the clock is expounded.The final test and analysis of the system are presented and the data indicate that the stability of the present system is much better than that of the original one.

简单介绍了被动型氢原子钟的组成及原理，阐述了基于数字调频和数字伺服的电子电路在被动型氢原子钟上的应用，并给出了设计的最终测试结果及其分析，数据表明该系统的稳定度比原有系统有很大提高。

Boundary-scan test technology is a standard measurability design technology, and it provides method to carry out the measurement of device function, interconnection and influence to each other, and is more convenient for the measurement of complex circuits.

边界扫描技术是标准化的可测试性设计技术，它提供了对电路板上器件的功能、互连及相互间影响进行测试的一类方法，极大地方便了对于复杂电路的测试。

As a candidate logic switch for nanoscale memory circuits and similar devices, the silver whisker switch has several attractive features

作为纳米级存储电路及相似设备的一项候选逻辑开关，这种银触须开关具备以下几个非常有吸引力的特征

A VC is created by storing input-port to output-port mapping in the memory of each switch and thus linking one switch to another until a continuous path from one end of the circuit to the other is identified.

虚拟电路的建立是藉由储存记忆体中input-port到output-port的连续应对，及从一个交换器到另一个可辨识交换器的连通。

The measurement in set theory, the properties of Metric Space, Measurement Topology, Measurable Space, Perfect Metric Space and its application in first order circuit are explored in this paper.

本文论述了集合上的度量、度量空间的性质、度量拓扑、可度量化空间、完备度量空间、及一阶电路中的度量空间。

Considering the complex environment of PLCC,this paper first establishes the channel model of low-voltage power line on the basis of the research of its impedance,attenuation,and noise characteristics.

针对低压电力线通信环境复杂的特点，本文在综述信道模型的基础上，根据对其阻抗特性、衰减特性及噪声特性的分析，提出并实现了利用实际网络结构、负载装置和电力线模拟电路，组成信道模拟系统的方法。

The circuit design of some key modulus as well as the system design was given in this thesis.

论文给出系统关键模块的电路设计及整个充电芯片的系统设计。

On the basic theory, some concepts are proposed, such as partial derivative of waveform polynomial, waveform polynomial vector, delay matrix, multiple valued Boolean process, conditional sensitization, waveform distance with crosstalk and three-dimentional Boolean process. And based on these concepts, a sensitization theorem for sequential circuits and the transition numbers theorems for waveform polynomial are proposed; the model and data structure for the representation and manipulation of waveform polynomial are proposed.

基础理论方面，提出波形多项式偏导、波形多项式向量、延时矩阵、多值Boolean过程、条件可敏化、考虑串绕的波形距离及三维Boolean过程等概念，并在此基础上提出时序电路的敏化定理、波形多项式描述跳变数的定理以及波形多项式的多项式符号表示与运算的模型和数据结构。

There are two loops in the control circuit which the feedback of the output voltage is the outer loop. In this loop there is a voltage error amplifier, a squarer, a divider and a multiplicator.

控制电路采用双闭环，外环输出电压反馈构成电压环，由电压误差放大器和一个平方器，一个除法器，及一个乘法器构成。

We control music by micro chip,the keypress control playing,and control speaker by in-phase blowing up method of counting blowing up.

它有功能多﹑价格优﹑外围电路简单的特点，很受音乐爱好者及音乐芯片制造商的青昧。

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。