Power switch for controlling power supply meter box-off and normal shutdown operation.
电源开关用于控制仪表箱电源的通断和正常停机操作。
Can you supply this quality at approximately 50 cents per meter?
你方可否以每米50美分的价格提供这种质量的产品？
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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