undamped free vibration 无阻尼自由振动
undamped-free vibration 无阻尼的自由振动
free vibration of undamped system 无阻尼自由振动情形
The use of the free undamped normal modes is seen to ensure that the linear and angular momenta of the distortional motion vanish.
看来采用自由无阻尼正规模态可保证变形运动的线动量和角动量为零。
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