1.Based on the capacitance sensing principle, Electrical Capacitance Tomography (ECT)with advantages of non-intrusion, fast response and low cost is one of the branch of Progress Tomography.
电容层析成像(Electrical Capacitance Tomography,ECT)技术是过程层析成像技术中的一个分支。 ECT系统基于电容敏感机理,具有非侵入、响应速度快、成本低等优点。
2.For the sake of improving the high frequency performance of the EMI filter , it analysis the influence of the different on the EMI filter ,making three aspects research of improving the performance of the high frequency performance of the EMI filter: 1) reduce the equivalent parallel parasitic capacitance (EPC) 2) reduce the equivalent series parasitic inductor(ESL) 3)increase the high frequency loss.
并对于 提高磁集成 EMI 电源滤波器高频性能的三个方面进行了研究:1)减小等 效的并联寄生电容(Equivalent Parallel Capacitance—EPC); 2)减小等效 的串联寄生电感(Equivalent Series Inductance—ESL);
3.This paper describes a reconstructive algorithm which is based on network theory for electrical capacitance tomography technic.There are twelve electrodes in the system.The permittivity distribution of flow with two components within a pipeline is reconstructed.Assume the permittivity distribution of the region to be reconstructed.Then whole measured area is discretized into a network composed of capacitance.The measurement circuit which contains a pair of source electrode and detecting electrode is taken as a four-terminal network.The across admittance of the four-teminal network is proportional to the capacitance between the source electrode and the detecting electrode.Modify the distribution of the permittivity according to the difference between the calculated capacitance and measured capacitance.The experimental results show that this algorithm is effective and can coverge.
本文描述了一种用于两种成份的流体成像的12电极电容层析成像新方法.该方法基于电路的网络理论，首先对重建区域假定一个介电率分布，用电容网络作为离散化模型，将每一个源电极和探测电极对组成的测量电路看作一个四端网络，该四端网络的跨导与源电极和探测电极之间的电容值是线性关系，这个电容值和测量得到的电容值之间存在误差，根据这个误差对修正介电率分布.通过对不同介质分布作的模拟实验结果，证实了该算法是有效的，收敛的.
4.From the charge-discharge curves,it is obvious that the discharge curve of the compos- ite electrode with 80% activated carbon content is linearity relation,and the composite electrode represents good capacitance performance as well the capacitance increases 25% with compounding only 20% LiMn_2O_4.The re- sults of AC impedance testing indicate that the solution resistance of composite electrode with 80% activated carbon content is only 0.lΩ,which represents ideal capacitance performance.
恒流充放电结果表明含80%活性炭时的放电曲线也基本呈直线,表现出较好的电容特性,仅复合了20%的LiMn_2O_4,其容量却增加了25%; 交流阻抗结果表明含80%活性发的复合电极的溶液欧姆电阻仅为0．1Ω,呈现出更理想的电容行为。
5.DQSS-14 type,UQC capacitance clearer adopts absolute measure. Compared with DQSS-1 type and DQSS-4 capacitance clearer which adopts relative measure,capacitance clearer has bigger clearing limit,exact cutting,fewer leaving defects.
指出:DQSS-14型、UQC型电容式清纱器采用的是绝对测量方式,与采用相对测量方式的DQSS-1型、DQSS-4A型电容式清纱器对比,清纱门限范围扩大,切疵准确、漏疵少。
6.The capacitance retention characteristics of metal/BIT/PZT/BIT multilayer structure were studied through the measurement of nonloop C V characteristics,and the relation of capacitance with retention time. The results show that the three layer BIT/PZT/BIT thin film is a promising gate insulater for ferroelectric field effect transistors(FFETs),because the capacitance retention property of BIT/PZT/BIT is much better than those of BIT and PZT/BIT thin films.
通过测量金属／BIT／PZT／BIT／Si多层结构的非回线型C－V特性曲线、电容与保持时间的关系，发现三层BIT／PZT／BIT薄膜具有很好的电容保持特性，是铁电场效应晶体管的理想栅极材料
7.The capacitance between gate and source of α-Si TFT consists of not only parasitic capacitance C_(gsp) due to overlaps between gate and source electrodes, but also intrinsic capacitance C_(gsp) of the channel between the source side and gate electrode.
提出了α-Si TFT栅源(源端与象素电极相连)电容不仅为栅源电极问交迭所产生的寄生电容C_(gsp),还应包括源端沟道与栅电极间的本征电容C_(gsi)。
8.Results show that the BET specific surface and specific capacitance increased as the KOH dosage and activation time increased, and the specific capacitance can reach 247F/g.
结果表明:在实验范围内增加 KOH用量及活化时间活性炭的比表面积和比电容增加,比电容最高达到247F/g。
9.The capacitance of FBE coating is the largest, three layer PE , Coal tar, Oil bitumen were similar, but the capacitance of three layer PE is the smallest both in soil and NaCl solution.
四种防护层噪声电阻大小顺序为三层PE>熔结环氧粉末>煤焦油沥青>沥青玻璃布;
10.The unit of capacitance in the meter-kilogram-second system equal to the capacitance of a capacitor having an equal and opposite charge of1 coulomb on each plate and a potential difference of1 volt between the plates.
法拉电容的单位，等于电容器极板上充以1库仑电量后两板间的电压为1伏特时的电容
