Through analysis and investigation, the author found out the operational rule of power supply system and based on the rule, a safe and reliable underground power supply system was set up.
通过分析、究，找出了其运行规律，在此基础上建立了安全可靠的井下供电系统。
Through analysis and investigation, the author found out the operational rule of power supply system and based on the rule, a safe and reliable underground power supply system was set up.
通过分析、究，找出了其运行规律，在此基础上建立了安全可靠的井下供电系统。
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