main source of electric power
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美
- 主电源
双语例句
- Turn on the main source switch, and the Control Unit is now put in work.
打开主电源开关时控制部件将开始工作。 - Three-phase UPS systems are used in most large data centers for power conditioning and battery back-up in the event of mains power failure.
当数据中心一旦发生主电源掉电的时候，三相不间断电源系统是应用最广泛的后备电池和供电条件。
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