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whirling motion
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whirling motion
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流体力学
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whirling motion
涡动
转子在不平衡力矩作用下发生挠曲变形时,形成的转轴绕其轴线的定轴转动以及轴线绕其静平衡位置的空间回转两种运动的合成。又称进动。
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Usain Bolt
US Air Force Official Qualification Test
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Usa manganese deposit
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USB3.0 analyzer
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更新时间:2026/11/9 6:44:30