Asynchronous motor is a kind of popular power equipment. When the motor is in light or idle run, the efficiency is quite low.

异步电机是一种为数众多的动力设备，当电机运行于轻载或空载时，其效率和功率因素都很低。

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Testing and analyzing the noise source of idle run and cutting, noise frequency characters and all kinds of methods for noise reduction for the surface planer were carried out.

试验和分析木工平刨床空转和切削时的噪声源、噪声频率特性和各种降噪方法。

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Testing and analyzing the noise source of idle run and cutting, noise frequency characters and all kinds of methods for noise reduction for the surface planer were carried out.

试验和分析木工平刨床空转和切削时的噪声源、噪声频率特性和各种降噪方法。

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