Fluid motion caused by an external force such as gravity.

由重力等外力引起的流体运动.

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The gait is fluid motion.

步态为流畅的动作.

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They hopped onto the table in one fluid motion and began to get to work.

他们以流畅的动作一下子就跳到桌子上,然后开始工作.

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This paper presents the equations of fluid motion on the cross - belt concentrator and gives their solutions.

本文介绍了横流皮带选矿机选别时液流运动方程及其求解.

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