Impulse, vibration and noise are ordinary troubles in hydraulic system, which is an available measure to reduce impulse noise while wave attenuator is used in the system.
液压系统的冲击、振动和噪声是系统中常见的弊端，采用消波器是减小系统冲击噪声的有效方法。
The principles of attenuator assembly of half -wave plate and polarizers are discussed briefly.
简要论述了半波片组合衰减器的 工作原理。
The principles of attenuator assembly of half -wave plate and polarizers are discussed briefly.
简要论述了半波片组合衰减器的 工作原理。
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