短语词组短语dry frictional damping 干摩擦阻尼FRICTIONAL DAMPING WASHER 阻尼片Integrity characters of frictional damping 摩擦阻尼整体特性isolation bearings with frictional damping 摩擦阻尼隔震支座damping frictional 摩擦阻尼 返回 frictional damping