under water acoustic measurment
undamped natural mode of vibration,无阻尼固有振动模态 under water acoustic measurment,水声综合测量仪 underdamping,周期阻尼;欠阻尼 ..
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无阻尼固有振动模态 undamped natural mode of vibration; under water acoustic measurment 振动的基本固有振动模 fundamental natural mode of vibration ..
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