电力公司说，由于外部电源厂系统故障，由于外部电源供应问题导致了反应堆停运。
Tepco said the reactors shut due to the loss of offsite power due to the malfunction of one of two off-site power systems.
本文介绍了作者研制的一种低压电力电缆故障诊断装置电源系统(低压电源部分)的原理、实现方法。
In this paper, the authors have proposed the principle and realization of the low-voltage part of the power system applied in a diagnosing device for low-voltage power cable.
对于在电源故障情况下的电力，可利用主轴电机的反电动势。
For the power in case of a power failure, back electromotive force of a spindle motor can be utilized.
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