我们希望将其作为主要的电力来源，把国家电网用作后备电源。

Because we can generate power with Natural Gas and other ways that can be cleaner and cheaper and use the grid as our backup.

这次强烈的地震和海啸毁坏了电厂的外部电源和以柴油为动力的后备电源。这些电源是用于和电站紧急情况下为冷却系统提供电力供应的电源。

The quake and tsunami cut the supply of off-site power to the plant and diesel generators intended to provide back-up electricity to the cooling system.

在19世纪晚期，欧洲和美国的电气化进程开始将蓄电池大规模用于电信技术、便携式电灯系统和后备电源。

The electrification of Europe and America in the late 19th century sparked the use of storage batteries for telegraphy, portable electric-lighting systems and back-up power.

提出了城市轨道交通采用弱电系统后备电源整合与智能化计时配电管理的设计理念，并在深圳地铁3号线中应用。

This paper introduces the integration of UPS and intelligent time distribution technique of weak current systems in rail transit and its application in Shenzhen Metro Line 3 .