It elaborates over the method and the reasons to choose the regular emergency power facilities-self-provided diesel generator unit, uninterrupted power source (UPS) and emergency power source (EPS).
对常用的应急电源装置：自备柴油发电机组、不间断电源装置UPS和应急电源装置EPS容量选择的方法、依据进行了论述。
The nuclear plant lost its main source of electric power to drive the pumps, and the tsunami knocked out the backup diesel generators that were supposed to drive the pumps in an emergency.
核电站失去了驱动冷却水泵的主要电力来源，海啸损毁了本应在紧急情况下驱动水泵的备用柴油发电机。
Emergency batteries worked for 10 more hours but when they ran out, an alternative power source had still not been connected. Residual radioactivity in the core continued to build up heat.
应急电池工作了10多个小时，但是当电量耗尽，替代电源还是没有连接上。
The project was saved when the computer switched to an emergency 10-minute back-up power source.
项目在计算机切换到一个可维持十分钟的紧急电源后被挽救了。
However, this power need not be provided from an emergency source.
如果发生…的情况，请不必着急。
However, this power need not be provided from an emergency source.
如果发生…的情况，请不必着急。
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