The distribution of particle concentration in pipe is unequality and the unequality degree varies with the cent of volume and regime flow;

颗粒在管内的浓度分布是不均匀的，随颗粒的体积分率和流型的变化而变化；

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The way the flow transitions from one regime to another is hugely complex but a number of models, in particular those using cellular automaton, have become useful in studying how it occurs.

车辆流量的变化从一个区域传导到另一个区域的方式极其复杂，但一些模型如元胞自动机算法，对研究这个过程如何发生十分有用。

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Some way into its path - perhaps around the 10 m mark (or at about the position of the wall of defenders) - the ball's velocity dropped such that it entered the laminar flow regime.

在球运行路径的某一点(10米处，或人墙的位置)球的速度下降，使空气在球体表面形成较稳定的层流。

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The focus of their attacks is likely to ebb and flow between local regime targets and regional or global ones.

NPR: Both Parties Find Ammo in Threat Summary