If the filter has been saturated with motor oil, it should be discarded and replaced.
如果过滤器已被机油浸透，就应该丢掉并更换一个。
The experimental(results) show that the EMI level of the integrated motor system has an obvious attenuation after adding snubber and filter.
实验结果证明，增加缓冲电路和滤波器后，一体化电机系统的传导干扰强度明显减弱。
The (frequency) converter (adopted) multilevel technology with cells series, which could obtain stepped SPWM waveforms, and could drive ordinary motor directly with no output filter.
该变频器采用单元串联多电平技术，可以得到阶梯SPWM波形，无需输出滤波器，可直接驱动普通电动机。
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