力的分析表明，在粘性介质中存在一对方向相反的阻力和拉力作用于微颗粒。
Force analysis reveals that there are drag and trapping forces imposed on the bead in the opposite directions, respectively, in a viscous medium.
为了应用概率统计规律解决机械阻力问题，分析了颗粒碰撞过程及相对距离、颗粒个数及碰撞方向。
This paper tries to resolve the problem of mechanical drag force by the rule of probability and statistics.
为了应用概率统计规律解决机械阻力问题，分析了颗粒碰撞过程及相对距离、颗粒个数及碰撞方向。
This paper tries to resolve the problem of mechanical drag force by the rule of probability and statistics.
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