以往经常用自备柴油发电机组、蓄电池、干电池和镍镉电池应急灯作为应急备用电源。
Traditionally, diesel oil-based generators, storage battery, dry battery and emergency lighting equipped Ni-Cd battery are always used as standby emergency power supply.
在供电条件比较差的地区，取得第二个电源供给一级负荷有困难时，也需要增设应急备用电源。
In areas of poor power condition, where it's difficult to get an alternative power to supply class 1 load, an emergency power is required.
美国的核监管机构必须确保所有核电厂在电网和备用发电机被破坏的情况下仍有足够的移动发电机或其他地备用电源以供应急。
American regulators must ensure that all nuclear plants have enough mobile generators or other backup power in place if their first two lines of defense are disabled.
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