power source

• 电源； 动力源

power source的用法和样例：

例句

1. Please turn off the electric power.
   请把电源关掉。
2. It is sometimes mistaken for a power supply hum.
   有时候，亚音频会被错误的认为是电源交流声。
3. All that is needed is a power source.
   全部工作所需要的只是一个动力源。
4. That part of a flight, in which the paraglider is not towed, carried or assisted by another aircraft or separate external or jettisonable power source.
   飞行伞没有被拖曳，运载或经由另一个航空器或独立的外部或可抛弃式动力源的协助，所作的飞行部分。