But wind power is uncertain, sometimes providing too much electricity and sometimes too little.
不过，风能的获取是不稳定的——有时风力提供的电力会过多，有时则会不足。
Zonal electrical distribution system, providing nearly three times the ship service electrical power.
带状电子分发系统，提供接近3倍的舰船通信业务电力。
A solar power system for providing electricity to a vehicle.
一种为车辆提供电力的太阳能动力系统。
It works through providing the hydraulic power source by test bed.
通过试验台提供液压动力源实现操作。
It works through providing the hydraulic power source by test bed.
通过试验台提供液压动力源实现操作。
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