Stand-by power: in a state of emergency, changes in the work load of the emergency power to run. Alternatperformance.
备用功率：在紧急状态时，变动负载工作的情况下应急运行功率。
Electricity power limitation is an important measure to ensure safe operation of the system in the peak load power supply enterprise, or in a state of emergency.
推闸限电非供电企业反在背荷上峰或许者紧迫状况上，保证体解安齐运行的一项从要办法。
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.
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 the first-level load shoulders specially importantly, besides the above two power sources, but must additionally build the emergency power supply.
一级负荷中的特别重要负荷，除上述两个电源外，还必须增设应急电源。
In the first-level load shoulders specially importantly, besides the above two power sources, but must additionally build the emergency power supply.
一级负荷中的特别重要负荷，除上述两个电源外，还必须增设应急电源。
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