短語詞組短語undamped free vibration 無阻尼自由振動undamped forced vibration 無阻尼的強迫振動forced function undamped vibration 無減振裝置的強迫振動undamped vibration absorber 無阻尼吸振器undamped -free vibration 無阻尼的自由振動undamped natural mode of vibration 無阻尼固有振動模態(tài)free vibration of undamped system 無阻尼自由振動情形 返回 undamped vibration