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。
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.
当球在空中速度减慢时，周围的气流从湍流变为稳定的层流。
As a soccer ball slows down after it's kicked in the air, the air flow around it changes from turbulent to smooth.
为在层流条件下的血流动力学、流变学以及体外模拟等理论或实验研究提供了稳定性方面的理论依据。
A theoretical Method of stability was provided for further theoretical and experimental research under laminar condition such as Cardivascular fluid dynamics, Biorheology, Simulation in vitro, etc.
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