When auxiliary batteries were exhausted, the plant was without power to continue cooling reactor cores and spent fuel pools.
一旦辅助电池用尽，核电站将无法继续冷却反应堆内核以及乏燃料池。
2
The fuel cells could be used as auxiliary power units to produce electricity when an aircraft is on the ground, for example, allowing its engines to be turned off.
燃料电池可以当做辅助供电单元使用，比如，当飞机在地面时，可以允许关闭飞机发动机。
3
They can significantly improve fuel economy without sacrificing performance or driving range, and may also increase power and provide additional auxiliary power for electronic devices and power tools.