The DC operation power supply system is a kind of important equipment in substation.
直流操作电源系统是变电站中的重要设备。
The DC operation power supply system is a kind of important equipment in transformer substation.
直流操作电源系统是变电站中的重要设备。
Operation From DC Power Supply: Batteries.
使用直流电源：干电池。
Operation From DC Power Supply: Batteries.
低压直流电作控制电源和应急电源。
Operation From DC Power Supply: Batteries.
低压直流电作控制电源和应急电源。
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