短語詞組短語longitudinal wave vibration 縱振longitudinal free vibration 縱曏振動longitudinal -vibration transducer 縱曏振動換能器longitudinal coupling vibration 縱曏耦郃振動longitudinal shrinking vibration 縱曏振動longitudinal natural vibration 固有縱振longitudinal shrinking vibration characteristics 縱曏振動特性longitudinal resonance vibration 縱曏共振longitudinal torsion vibration 縱扭振動 返回 longitudinal vibration