Therefore, wash clothes, wash hands or do other work and water contact, it is best to take down the quartz table.

因此，洗衣服、洗手或做其他和水接触的工作时，最好把石英表取下来。

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Therefore, wash clothes, wash hands or do other work and water contact, it is best to take down the watch.

因此，洗衣服、洗手或做其他和水接触的工作时，最好把手表取下来。

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Combining momentum theory and vortex theory, rotor circulation equation was deduced. The rotor down-wash flow field was calculated using generalized down-wash flow model.

结合动量理论和涡流理论，推导了桨叶环量方程，用广义尾流模型计算了旋翼下洗流场。

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Combining momentum theory and vortex theory, rotor circulation equation was deduced. The rotor down-wash flow field was calculated using generalized down-wash flow model.

结合动量理论和涡流理论，推导了桨叶环量方程，用广义尾流模型计算了旋翼下洗流场。

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