短语词组短語dry frictional damping 乾摩擦阻尼FRICTIONAL DAMPING WASHER 阻尼片Integrity characters of frictional damping 摩擦阻尼整躰特性isolation bearings with frictional damping 摩擦阻尼隔震支座damping frictional 摩擦阻尼 返回 frictional damping