It usually appears at the RF, blade passage frequency and commutator brush frequency, and their higher harmonics.

它通常出现在射频，叶片通过频率和整流子刷频率，其高次谐波。

youdao

It usually appears at the RF, blade passage frequency and commutator brush frequency, and their higher harmonics.

它通常出现在射频，叶片通过频率和整流子刷频率，其高次谐波。

youdao