The type of bearing used in a fan can affect its performance and noise output.
该类型的轴承用在范会影响其性能和噪声输出。
Noise reduction type: can effectively reduce the noise.
降噪型：能有效降低噪声。
With unknown noise level, the MSD is of "angle type".
当噪声水平未知时，匹配子空间检测器属于“角度型”检测器。
This paper describes the design of the ditch-type noise silence trough.
本文介绍了地沟式消声坑槽的设计。
With direct type wheelhead generator, structure is compact, noise is low , fault is few;
采用直接式磨头电机，结构紧凑，噪音低；故障少；
With direct type wheelhead generator, structure is compact, noise is low , fault is few;
采用直接式磨头电机，结构紧凑，噪音低；故障少；
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