原理

Have been a keyboard control circuit mainly and have demonstrated the circuital principle and function, and have shown LED principle go along introduce that.

主要是键盘控制电路与显示电路的原理和功能，并对LED显示原理进行了介绍。

This paper introduces the control principle of PLC, the composition and operational principles of central air-conditioning water circulatory system.

本文介绍了PLC的控制原理、中央空调水循环系统的组成和运行原理。

Then, based on the testing results and inherent safety principles, preventive measures for coal dust explosion were discussed.

基于本质安全基本原理和试验结果，讨论预防煤粉爆炸的各种基本方法，并重点阐述本质安全原理与粉尘爆炸影响因素、不同的预防方法、过程设备的选择等之间的关系，对已制定的爆炸风险控制措施进行完善和补充。

On basis of the principle of the study of Chinese rhythm and news title, this paper widely reviews the news titles of newspaper, television and broadcasting and analyze various presentations of rhythms in news titles, such as, pause and delay , cadence, stress, tune and cockneyism.

本文运用汉语节律学原理和新闻标题学原理广泛考察报纸、电视和广播的新闻标题，分析新闻标题中节律的种种表现形式，如停延、节奏、重音等。

In this chapter, under the penalty functional satisfies the local Lipschitz condition, by using the Ekeland's variational principle and the properties of finite codimension, the Pontryagin's maximum principle of corresponding optimal control problem whose control variable is the harvesting rate and the input rate respectively is obtained.

本章在性能指标泛函满足局部Lipschitz条件下，利用Ekeland变分原理和有限余维的性质，证明了控制变量分别为收获率和输入率的相应控制问题的Pontryagin极大值原理。

The self-mixing effect of laser diode including the self-mixing model, the problem offeedback coefficient, measure principle was studied. The characteristic of theVCSELs seismic acquisition system was studied by experiments.

讨论LD自混合效应的原理，包括自混合的模型、反馈系数问题和测量原理；之后讨论了VCSELs的调制特性，通过实验研究了VCSELs地震波测量系统的特性。

In chapter 2, firstly, the principles of photoelectric collimator are introduced.

第二章分析了光电瞄具的工作原理，在此基础上讨论了光电瞄具模拟训练器的基本原理及组成。

By using damping force between steel and columniation after pre-deformation, adjusting the type, quantity, length and position of the steel bar, and changing pre-deforrnation of the steel bars, all kinds of deceleration curves can be repeated.

介绍了自行设计的汽车模拟碰撞吸能器的特点及原理，利用LS—DYNA有限元分析软件对吸能器的波形复现原理进行了仿真分析，利用销柱间钢筋预变形产生阻尼力，改变钢筋的属性并调节钢筋的类型、数量、长度和位置，改变钢筋预变形量，复现出不同车重、不同碰撞车速所期望的减速度波形。

To learn the principles of combinational and sequential logic circuits and to be familiar with the basis of digital system. The course will cover the contents of VHDL and the principles of CPLD/FPGA.

本课程之目标在於帮助学生了解数位系统中组合及序向逻辑的原理及设计方法，以建立数位系统设计之基础，并辅以VHDL硬体描述语言的模拟实习以验证理论并熟悉CPLD/FPGA之原理。

On the basis of analyzing the scan error of a pentaprism, the principle of scan error compensation is put forward, and the quantized formulas and applying method of compensating the scan error are presented.

在分析五棱镜扫描误差的基础上提出了误差补偿原理，并给出了量化补偿公式及误差补偿原理的实现方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。