In DVD focus servo system, the skew of the disc induces periodic disturbance whose frequency is the same with the rotation frequency of the disc.
在DVD聚焦伺服系统中，光盘翘曲会导致产生与光盘转动频率相同的周期性扰动。
Disturbance is mainly divided into same-frequency, high-frequency and low-frequency interferences in super miniature-rotor dynamic balancing machine.
在超微型转子动平衡机中，主要干扰分为同频干扰、高频干扰和低频干扰。
Disturbance is mainly divided into same-frequency, high-frequency and low-frequency interferences in super miniature-rotor dynamic balancing machine.
在超微型转子动平衡机中，主要干扰分为同频干扰、高频干扰和低频干扰。
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