They're used to demonstrate to potential new hires how an e-ink screen can hold an image indefinitely without being connected to a power supply.
他们是被用来向未来的新职员展示电子墨水的显示屏是如何在没有电力支撑的情况下无限期地显示图像的。
It and reversing current different is not to be, but with a anode intermittently stop, because the intermittent power supply current interrupted, cathode potential with time periodically change.
它与换向电流所不同的是不把镀件作阳极，而是间歇地停止供电，由于间歇中断电流，阴极电位随时间周期性地变化。
The principle and the method of making a special power supply for a small, highly stable potential difference meter are introduced. It finds comprehensive application in college physical experiments.
本文介绍了一种小型高稳定电位差计专用电源的原理及制作方法。该电源在大学物理实验中具有较广泛的使用价值。
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