backup battery

常见例句

The brain requires a constant supply of energy and 'has only a limited backup battery, ' he says.
霍洛韦说，大脑需要持续供应能量，而且“只有有限的后备电池”。
(Power outages, however, activate backup battery and safe mode, which means you can still perform tasks like unlocking a door manually).
（比如停电了。但是还有启动备用电池和安全模式的存在，这样你就可以继续你手上的活计了）。
Technical challenges remain, including integrating a leakproof backup battery into the device and miniaturising the FREE-D’s control electronics.
存在的技术难题还很多，包括将一个防漏电的备用电池集成到心泵内，还有缩小FREE-D电子元件的体积。

After some fumbling in the dark I ripped out the failing 9-volt backup battery and it went dead.
FORBES: Hurricane Irene Sparks An Electronic Counterattack
The two 5W-powered USB ports allow users to connect even two bus-powered external hard drives and also function as a backup battery for two iPads.
ENGADGET: Hyper debuts iUSBport mini, 2 and HD cloud storage and streaming devices (hands-on)
The homes will all have solar and backup battery systems.
FORBES: Panasonic's Next Product: A Small Green Town