第一节 理想流体的流动 一、实际流体和理想流体 流体是液体和气体的统称，实际流体（real fluid）是指自然界中实际存在的液体或气体，人体血流动 力学所研究的对象主要是血液，是实际流体的一种。
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... actual flow velocity 实际流速 actual fluid 实际流体 actual forward distance 实际推进距离 ...
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一口井实际产出的流体 retained fluid
最佳实际气体流速 optimum practical gas velocity
实际气体节流理论 practical gas throttle theory
又从另一侧面验证了所提出的刚体状态方程确能较好地代表实际流体分子的斥力项，为开发较好的立方型方程提供了参考。
This, from another aspect, confirms that the proposed hard-body equation of state represents repulsive pressure term of cubic equation of state for real liquids with good precision.
他宁愿做一个水管工的伙伴，做一份真正需要动手的工作，也不愿坐在桌子前学习流体静力学，而不知道这些东西有什么实际用途。
He would rather be a plumber's mate and do a real job that requires doing than learning about hydrostatics sitting at a desk, without understanding what practical use they are going to be.
可以做练习来检验一下的，实际上很简单，假定有围绕x轴一起旋转的流体。
An exercise that you can do, which is actually pretty easy to check, is say that we have a fluid that is just rotating about the X-axis uniformly.
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