free vortex turn
自由涡转
以上为机器翻译结果,长、整句建议使用 人工翻译 。
Vortex also called left turn, is the axis of rotation happened a self-excited vibration, it is neither has the free vibration characteristics, also do not belong to the type of forced vibration.
涡动又称甩转,是旋转轴发生的一种自激振动,它既不具有自由振动的特征,也不属受迫振动的类型。
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