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。
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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