增加ECT系统的测量极板数目，可以增加投影数据量。
Using more measurement electrodes in ECT system can obtain more projection data.
介绍了用电子分析天平测量平行板电容器两极板间的静电力和真空介电常量的原理和方法。
The theory and method in measuring accurately the electronic and vacuum dielectric constant of parallel plate capacitor are introduced.
利用测量电解液中IR降以计算电流密度的方法，测量了两种负极板的电流电势分布。
The current density and potential distributions were obtained by measuring the IR drop in electrolyte on the two kinds of negative plates.
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