名词
中文翻译：非稳态流
同义词：
['unsteady flow', 'unsteady state flow']
例句：
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1.In the unsteady-state flow of a river, the velocity of water decreases as it flows downstream.
在河流的非稳态流动中，水流速度随着向下游流动而减小。
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2. The unsteady-state flow model is used to predict how the flow will change over time.
使用非稳态流动模型来预测流量随时间的变化情况。
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3. The unsteady-state flow in the tunnel was studied using computational fluid dynamics (CFD).
使用计算流体动力学研究了隧道中的非稳态流动。