face voltage
... face equipment 面板装置 face voltage 工作面电压 face-plate breaker controller 平触点断路控制器 ...
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阐述了矿井采区工作面供电设备选型方法、供电设计的步骤，及提高采区供电电压的意义。
The paper elaborates the selecting method of power supply equipment, the step of power design as well as the significance of raising voltage in mining area.
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