... power switch control；电源开关控制 power switch key；电源开关钥匙 power switching；电源开关，配电系统 ...
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main power key switch 主电源钥匙开关
The switch apparatus is a key element for total electric power system in reliability.
开关电器是整个电力系统工作可靠性的关键元件。
Turn on the sub-power supply switch and key of screen displaying.
打开触摸屏下面的电源键，打开显示屏幕。
Vacuum switch is the key equipment in power system and is used to turn-on and disconnection power system. At the same time it should protect and monitor many kinds of faults.
真空开关是电力系统中的关键设备，用于接通、分断电力系统同时对各种故障进行保护监控。
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