短語詞組短語high -frequency vibration measurement 高頻測振low -frequency vibration measurement 低頻振動(dòng)測量free coupled -vibration force-measurement frequency-domain method 自由耦合振動(dòng)測力頻域法super low -frequency vibration measurement 超低頻振動(dòng)測量 返回 vibration-frequency measurement