... 电压放大 voltage magnification 电压维持 voltage maintenance 电压维持标准 voltage maintenance standard ...
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Output voltage maintenance time 输出电压保持时间
voltage maintenance standard 电压维持标准
Extra Low-Voltage Systems Maintenance 超低压系统维修
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The cost of burying cables makes it prohibitive, even without the ease of maintenance provided by suspended high voltage lines.
BBC: Landscape impact of electric pylon softened by design?
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