原理

It describes detailedly the working mode of the jointless track circuit, the received theory of inductor and the installation requests too.

论文介绍了轨道电路工作原理和分类，并详细描述了无绝缘轨道电路的工作方式和接收线圈的工作原理以及其安装要求。

The kinematical and force- balance principle s of the device are analyzed.

分析了该机构的运动学原理和力平衡原理。

Then the relations of structures and properties of microporous membranes used in lithium-ion batteries were discussed.

介绍了锂离子电池隔膜用微孔膜的制备原理与结构，重点叙述了熔融拉伸法和热致相分离法制备微孔膜的基本原理和膜结构影响因素，并在此基础上讨论了锂离子电池隔膜用微孔膜结构与性能之间的关系。

In this thesis, the basic principles of using boundary element method to extract capacitance and the multipole accelerated algorithm are introduced. A new conductor dividing and numbering method are realized. The realizing process of multipole accelerated algorithm, especially the realizing process of unit cube's capacitance extraction, is detailedly illuminated. The realizing program chart of multiconductor capacitance extraction is given.

在本论文中，介绍了应用边界元法提取电容的基本原理和多极加速算法的基本原理；实现了一种新的导体分割编号方法；对多极加速算法的实现过程，主要是单位立方体电容提取的实现过程作了详细地说明；给出了多导体电容提取的程序实现框图。

Then detailedly introduces the principle of pole-changing modulating speed and design feature in times pole proportion and non times pole proportion in the Mixed pole-changing simplex winding multispeed asynchronous motor , carry on discuss to the main parts of electrical machinery electromagnetism computation; by using VISUAL BASIC under WINDOWS platform for computer-aided design method for the mixed pole-changing simplex winding multispeed asynchronous machine, carries on profound analysis for the computer-aided design in the following aspect such as rotor and setting flush piece size, groove shape size, the rotor and setting winding connection, and start performance.

本文在介绍了单绕组多速电动机的概况，阐述了目前多速电机的发展现状与前景；利用槽号相位图以及混相原理对变极绕组进行了研究，确定了绕组的混相方案；并详细地介绍了混相变极单绕组多速电机在倍极比与非倍极比时的变极调速原理以及设计特点；对电机电磁计算的主要几个部分进行了讨论；介绍了使用WINDOWS平台下的VISUAL BASIC对混相变极单绕组多速异步电机的计算机辅助设计方法，对混相变极单绕组多速异步电机的定转子冲片尺寸、槽形尺寸、定转子绕组接法、定转子相带、起动性能的几个方面的计算机辅助计算进行了深刻分析；最后，对混相变极单绕组多速异步电机的样机检测试验结果进行了分析。

On control method, develop under the control of from hand movement to autocontrol; On the control function, arrive at intellectualized under the control of from developing simplely under the control of; Develop on the busy, from scheme weight to informatization treatment; On controlling principle, touch the relay logic navar working a telephone switchboard stiffly from unitary ......

因而，受到各工业国家的重视，并投入大量的人力、物力加以研究和应用。在我国，近几年来也有较快的发展，并取得一定的成果，受到各工业部门的重视。通过此设计，可以使大家了解到X62W万能铣床的电气控制系统的结构和PLC控制的原理，简单工作原理。目录一。绪论

The starting point of this thesis is, based on the current law and the relevant stipulations found in The Property Right, to provide a comprehensive analysis of the current right and supposed right of the collective construction land by combining nomological principles and economic principles, its flaws in the present way of circulation, and some solutions will also be offered.

笔者写作本文的出发点则是尝试从现有法律以及《物权法》中的一些对于集体建设用地的相关规定着手，用相关法学原理结合部分经济学原理来全面分析集体建设用地的现有、应有权利，以及现有流转方式的缺陷，并提出一些解决策略。

By utilizing the theory of numerical processing, digital frequency spectrum analysis and multi-rate digital signal processing, this paper focuses the research on mechanism of the testing error, the compensation of testing error in the field of sampling technology, nonsynchronous sampling, nonuniformly sampling, and puts forward some new analyzing, compensation and realization methods.

本论文通过运用数值处理、数字频谱分析和多抽样率信号处理的有关理论和原理，对采样技术、采样的非同步方式和采样的多通道方式中的测试原理、测试误差产生机理、测试误差补偿及其应用技术等主要环节进行了深入的研究，提出了一些新的分析与处理方法，建立了有关测试误差分析与补偿的预估理论和实现方法。

The authors analyzes the function change of urban in its evolvement and the eco\|environmental problems caused by this change.Based on this analysis and the method of systems ecology founded by Odum H T,the authors discuss the aim and the principle of urban eco\|environment planning under the sustainable development;put forward the general view of urban eco\|environment planning in which the kernel is the adjusting of industry structure,land\|use structure and spatial pattern;construct the dynamic simulatin...

在剖析城市演化历程中的功能变迁与导引的生态环境滞胀类型和危害的基础上，着重利用系统生态学的原理和方法，探讨了可持续发展要求下的城市生态环境规划的目标、原理和研究的内容、方法及过程；提出了以产业结构、土地利用结构和空间格局的调整为核心制定城市生态环境规划的总体思路；创造性地融大气扩散、雨水沉降和植被吸纳SO2 ，NOx 及TSP等污染物模型与经济、人口和碳氧平衡等模型于一体，构建了案例城市广州的生态环境综合调控模型，并借助DY NAMO语言模拟得到了广州市未来生态环境规划的优化方案。

First,This pape introduces the principle of particle system and makes a further study on the basic model of firework particle system and the principle of letting off fireworks.

本文首先阐述了粒子系统的基本原理，对烟花粒子系统的基本模型和燃放原理进行了分析。

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。