如果更多的电力需求是间歇性，发动机的功率可补充电动机在电源时，需要更多的时间。
If demand for more power is intermittent, the power of the engine can be supplemented by an electric motor during times when more power is needed.
请勿将开关卡直接连接到交流电源、由某个电力公司提供的功率水平。
NEVER connect switching CARDS directly to AC mains, the level of power supplied by an electric utility company.
对已建成的功率因数偏低的泵站采用电力电容补偿，可减少电源和线路的电流负荷。
If we compensate the pump station with lower power Numbers for electric power and electric capacity we can reduce the current load in the power source and the lines.
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