High voltage is applied between the two parts across the insulation being tested, such as the primary circuit and metal enclosure of the equipment under test (EUT).

高压施加于被试的两个相互绝缘的部件之间，例如被试设备的主电路与其金属外壳。

youdao

An A. C. voltage of 2000 volts is applied between the winding and ground to test the integrity of the insulation between the winding and core iron.

在线圈绕组和地线上加上200 0伏交流电以测试线圈绕组和芯铁之间的绝缘的整体性能。

youdao

Spark test voltage values given by the potential difference between the test electrode and the conductor of the core or cable under test shall be specified in the cable standard.

火花试验时，电极与被测试电线或电缆之间的电位差的值在电线标准中有明确规定。

youdao

And what we did was he put two detection plates on either side of these cathode rays, and when he put a voltage difference between these two plates, he wanted to see if he could actually bend the rays and test if they're actually charged or not.

但没有实验证明这件事,这就是Thomson所做的，它在阴极射线旁边放两块探测板,他想通过看当他,在两板之间加上电压后,阴极射线是不是会。

麻省理工公开课 - 化学原理课程节选