阻抗是对电的抵抗力——小孩子也略有所知，是电压和电流强度的比值。
Impedance is related to resistance-which, as generations of schoolchildren have had drummed into them, is the ratio of voltage to current.
电气强度测试仪(也称为耐压测试仪，电介质强度测试仪，闪点测试器，高压测试仪)是用来测量此类电流值的测试仪。
A dielectric Withstand tester (also called hipot tester, dielectric strength tester, flash tester, high voltage tester) is then used to measure this current.
在电鳗的身体中，五分之四的细胞都是专门用来发电的。电鳗能释放的电流强度大体上与它的身体长度相一致。
As many as four-fifths of all the cells in the electric eel's body are specialized for generating electricity, and the strength of the shock it can deliver corresponds roughly to length of its body.
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