throw-in of working electric source
... 工作不投入 Personal disengagement at work 工作电源投入 Throw-in of working electric source 工作上自我投入 ego involvement in work ...
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以襄樊电网为工程实际基础，介绍了区域电网网络备用电源自动投入系统产生背景、工作原理。
On the basis of Xiangfan power grid, the formation background and working principle of district grid standby power auto-switching in were introduced.
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