According to the kind of driving machines, the speed-varying methods of air-conditioner fans can be classified into two kinds: DC speed-varying and ac speed-varying.
根据驱动电机的不同，可以把空调风机调速方法分为直流调速和交流调速两种。
According to the kind of driving machines, the speed-varying methods of air-conditioner fans can be classified into two kinds: DC speed-varying and ac speed-varying.
根据驱动电机的不同，可以把空调风机调速方法分为直流调速和交流调速两种。
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