查询词典 capacitance

The key part of light alarm circuit of the system is the flashing tube and the life level of the main charge and discharge capacitance. Thus ,in this design, adopted autotransformer step-up type, two-level filter and double flashing tube, in order to light the burden of the main charge and discharge capacitance, reduce the heat productivity and extend the life level of the capacitance.

在系统的光报警电路中关键部件是频闪管和主充放电容的寿命，因此在电路设计中采用自耦变压器升压方式和双级滤波、双频闪管等独特的电路结构，减轻主充放电容的负担，减少发热量，延长电容使用寿命。

Following the dual principle of the circuit theories,the dual network of mutual inductance network ,the concept of mutual capacitance,and the dual relation of mutual capacitance and mutual indutance are analysed and substantiated,and the decoupling equivalent circuit of mutual capacitance is discussed as well.

从电路理论对偶原理出发，分析论证了互感网络的对偶网路、互电容的概念及互电容与互电感的对偶关系，并探讨了互电容的去耦等效电路。

The main problems researched in the dissertation and achievements are as follows: The dissertation explains the science background and the theoretical and actual meaning of the task. The progress and the problems of the flow imaging technique are briefly explained. The advantages of electrical capacitance tomography are discussed. The paper discusses the formation and operating principle of ECT, and builds up the definite mathematical model by detail theoretical analyse, and establishes the Finite Element Model of the system by changing the finite boundary value problem of ECT into equivalence variation problem according to variation principle. On the basis of the FEM of the system, the paper builds the finite element model of the capacitance sensitivity field distribution and programs its finite element simulation software and proves the validity of the FEM of the ECT from different aspects. With the FEM and the qualitative analyse of the effect of each structural parameter of the capacitance transducer on its capability, this paper optimizes the structural parameters of the capacitance transducer, and obviously improves its capability. The compare of the simulated result with the static experimental result shows that the error of them is less than 0.9%.

其主要研究内容包括：阐述课题研究的学术背景及其理论与实际意义，概括总结出流动层析成像技术的发展现状和存在的问题，指出电容层析成像技术的优点；讨论电容层析成像系统的组成及工作原理，进行详尽的理论分析，以变分原理为基础，将ECT的有限元边值问题转换为等价的变分问题，从而建立系统的有限元模型；在系统有限元模型的基础上，建立敏感场的数学模型，编制有限元的仿真软件，并从不同角度证明电容层析成像系统有限元模型的正确性；利用有限元模型，定性地分析电容传感器各结构参数对其性能的影响，并对传感器结构参数进行优化设计，使其性能得到明显的改善。8电极ECT系统的仿真和静态实验结果的比较表明，它们之间的相对误差小于0。

In this paper, the size and structure of the uniplanar scattering-field capacitance sensors are optimally designed by simulation and experiment for test depth and testing feature with guard electrode for improving the anti-disturbance capability. A new uniplanar scattering-filed capacitance sensor for measuring water in building inclosure is designed based on improved charge/discharge capacitance measuring circuits. This kind of sensor has wide test depth and high sensitivity.

针对围护结构含水率测试深度的要求和测试特点，本文通过仿真和实验，对同面电容传感器探头的结构尺寸进行了优化设计，并采取了保护电极以提高其抗干扰能力；运用改进的充放电电容检测电路，设计出一种测量围护结构含水率的新型同面散射场式电容传感器，该传感器具有宽范围的测试深度和较高的测试灵敏度。

In this paper, a method of measuring the piezoelectric properties of ADP crystal by introducing a dynamic capacitance as well as increasing the capacitance CT in series with the vibrator and correcting the static capacitance C0 is described. The results of measurement are satisfactory.

本文在比较了前人测量ADP晶体压电性能的若干重要方法之后，根据ADP晶体的特点，指出采用动态电容方法并增大串接电容C_T和修正静电电容C_o，这样虽然使用较差的设备，仍得到了较好的结果。

To solve the matter between the capacitance sensor circuit's predigestion and the uncertainty of measurement, a method that using switch capacitance theory for the research of capacitance sensor is put forward.

为解决电容传感器电路简化与测量不确定度之间的矛盾问题，采用将开关电容理论引入到电容传感器中的方法。

This paper proposes an iterative image reconst- ruction algorithm based on Bayesian theorem for electrical capacitance tomography.

提出了一种基于贝叶斯理论的电容层析成像(electrical capacitance tomography，ECT)图像重建算法。

The results show that the capacitance of RuO2·nH2O films unannealed is unstable. Annealing at temperatures of 100, 150, 200, 250 and 300℃for 2 h respectively, the capacitance of RuO2·nH2O becomes stable after 60 cycles. The specific capacitance of RuO2·nH2O films annealed at 100℃reaches the maximum of 0.0838 F/cm2.Key words: electrodeposition; RuO2·nH2O films; capacitance; annealing temperature

结果表明，未经退火处理的RuO2·nH2O薄膜的电容性能不稳定，在循环伏安法测试中电容量随循环次数的增加而降低；将RuO2·nH2O薄膜分别在不同温度(100， 150， 200， 250和300℃)下进行的2 h的退火处理，经退火处理后的RuO2·nH2O薄膜的电容性能经过60次的循环后趋于稳定，其中，经过100℃退火处理的RuO2·nH2O薄膜的比电容最大，其比电容为0.083 8 F/cm2。

This paper presents conductive polymer molecular materials with insulating powder, mixed into the deployment of surge suppressors for low capacitance of paste, while the component design concept is based on the field of passive components, manufacturing process to make the basic theory to design the protective components, the main use of the existing ceramic substrate for the component body structure design, screen design in the body through the structure of the gap at the top of the printing layer of a different conductors, and then to learning to know the printing process technologies approach the low capacitance of the surge suppressor paste cover the gap in the two conductors, and by the resistance of plastic burning process technology, the temperature of sintering parts made of electrostatic protection element, and this protection through the external ESD components in bombardment tests, measurement of capacitance electrostatic discharge after bombardment, Trigger voltage and leakage current data, and the volume measured by the results of future discussion of the layout of this different style of work in the same area, different clearance, solid content and temperature than the next, for the attainment of performance components, a low capacitance ESD protection devices with low breakdown voltage requirements and to chip-based protection devices can be designed to integrate with the advanced Integrated Circuits or used independent of the electrostatic protection element in the system.

本文提出高分子导电分子材料搭配绝缘粉末，调配混合成适用於低电容突波抑制器之PASTE，而元件设计概念是以被动元件制程领域作基础理论去设计此防护元件，主体利用现有陶瓷基板为元件本体结构设计，在经由网版设计在本体结构上方印刷一层不同的间隙导体，再以习知印刷制程技术方式，将低电容突波抑制器之PASTE覆盖在两导体的间隙内，并经由电阻制程习知塑烧技术，将元件烧结适当温度制成静电防护元件；而此防护元件在经外加静电放电轰击测试后，量测静电放电轰击后的电容、Trigger voltage及漏电流相关数据，并藉由测结果讨此同的布局样式，在相同工作区面积、不同间隙、固含量与温度比下，对於元件效能是否达到静电防护元件低电容与低崩溃电压的需求，并藉此晶片型防护元件可设计整合於先进积体电或应用於独系统的静电防护元件中。

The capacitance pressure sensor converts the outside pressure exchanging signals into the capacitance changing values; the multi-way switch switches the capacitances of the two sides; the capacitance frequency converting circuit is the self-exciting oscillator circuit and converts the measured capacitance signals output by the multi-way switch into the frequency signals.

其中，电容式压力传感器：用于将外界压力变化信号转换为电容变化值；多路开关：用于对两侧电容进行切换；电容频率转换电路：其为一自激振荡电路，用于对多路开关输出的被测电容信号转换成频率信号。

This is not an ordinary box, which is used as a background picture of the dialog box, very pretty.

详细说明：这可不是一个一般的对话框，它是用图片作为背景的对话框，非常好看。

Conceal me what I am,and be my aid for such disguise as haply shall become the form of my intent.

遮掩我的身份，帮助我，我的面具将成为我的目的。