查询词典 dielectric polarization

This paper firstly introduced the dielectric and its polarization mechanism. The concept and present situation of the dielectric and high dielectric materials as well as the CaCu3Ti4O12 materials were introduced in this thesis.

本文首先介绍了电介质及其极化机制、高介电材料的概念、高介电材料研究背景和目前CaCu3Ti4O12材料的研究情况。

According to this theory, the origin of return voltage in oil-paper insulation system is analyzed. Then two equivalent extended Debye models, a simplified one as well as a complicated one, are established. Based on the dielectric polarization theories, the parameters in the Debye models are analyzed, and its influence to the curve of return voltage are also discussed.

本文首先从极化过程的基本原理出发，给出了回复电压法的理论基础，并由此分析油浸式电力变压器出现回复电压的原因；然后建立了两种等效扩展德拜模型，结合介质极化理论分析了模型中电路参数的意义，并讨论了各参数变化对回复电压曲线的影响。

Some monitoring methods for residual water content were summarized and analyzed, moisture sensing and dielectric polarization method would be a future research direction, while weight sensing was also a ideal measuring method if some problems such as heat transfer and installation could be solved.

对当今残余水分监测的方法进行总结和分析，认为湿度传感器法和介电法将成为未来的一个研究方向，而称重法若能解决传热及安装等问题，也会是一种理想的测量手段。

Based on the theory of medium polarization, the dielectric properties of the mixture of oil and water researched, it is found that the best frequency for measuring dielectric constant of the oil-water mixture ranges between 10〓—— 10〓Hz considering medium polarization, EM wave modes, circuit simplification and so on.

本文的主要研究内容和研究成果如下：(1)根据介质极化理论，通过对油水混合介质的介电特性的研究，结合介质极化、电磁波的模式以及简化实现电路等因素，提出了测量油水混合介质介电常数的最佳工作频率在10〓～10〓Hz之间。

Through comparison with the classical dielectric polarization theory, we have demonstrated that this capacitance response is essentially a consequence of the non-local property of the wave-functions and the quantum confinement supplied by the potential barriers, so it is referred to as"the QCSE-related quantum capacitance".

与经典介质极化理论的比较表明该电容响应与载流子波函数的扩展性和量子阱势垒的量子限制作用是密切相关的，故称之为"QCSE量子电容"。

The dielectric relaxation is non-Debye dielectric relaxation when slow polarization effect cannot be neglected in the samples. And from low frequency to radio frequency, the complex ε of the samples is not consistent with Kramers-Kroning relation.

实验表明：介质中慢极化效应的存在使得其介电弛豫普遍都不是德拜型的；在超低频至射频的广阔频段，样品的复ε不满足Kramers-Kroning关系。

It was shown that 1%Eu-PZT films have the highest Rayleigh constant, which indicates the minimal interaction of defect-domain walls and high contributions to dielectric and polarization. The high mobility of domain walls, combined with the obvious improved crystallization of 1%Eu-PZT results in the increase of dielectric constant and remanent polarization.

结果表明，1％Eu-PZT薄膜的瑞利系数最大，缺陷与畴壁之间的相互作用最小，畴壁运动对介电常数和极化强度的贡献最大，加之薄膜明显改善的结晶特性，使1％Eu-PZT呈现较高的介电常数和剩余极化强度。

In first-order transition, the dielectric constant becomes infinite at T〓 Our model has a good agreement with the experimental results on the polarization, dielectric, specific heat and high-field properties.

在一级相变中，介电常数在T〓处是发散的。

In Chapter 2,the polarization and loss mechanism of fruit in the alternating current arestudied,and dielectric parameters such as dielectric constant、equivalent impedance andequivalent capacitance are put forward to analyze the interaction between fruit internalquality and alternating current.

第二章 研究了水果生物介质在交变电场作用下的极化和损耗机制，提出了复介电常数、等效阻抗及等效电容几个相互联系又有所区别的电特性参数是研究交变电场与水果相互作用的基本参数。

Mathematics model of dielectric under uniform electric field is built up, and total current is separated into three parts such as conductive current, instantaneous current and relaxation polarization current, then polarization and depolarization of linear and non-linear dielectric are simulated under step excitation, the results show that nonlinearity of non-linear conductivity is reflected by measuring surface potential attenuation during the process of self-discharge of non-linear dielectric.

论文首先对处于均匀电场下的电介质进行电路建模，把电介质的总电流分为电导电流、位移极化电流和松弛极化电流三部分来分析，然后以此为基础利用Matlab软件中的Simulink平台对直流阶跃激励下线性和非线性绝缘介质的极化和退极化过程进行了仿真，结果表明可以通过测试非线性绝缘介质自放电过程的表面电位衰减来反映其非线性电导的非线性程度信息。

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。