据合理估计，你得到一个弹性碰撞，但空气阻力总存在。
And so to a reasonable approximation, you will get an elastic collision, but, of course, there's always air drag.
在形成该星云团的碰撞过程中，大多数恒星彼此分离并且快速向前运动，几乎未受任何阻力。
In the collision that formed it, the stars mostly missed each other and went speeding ahead, relatively unimpeded.
织物循环运行速度，染液速度总是超越织物运行速度，然后产生了染色的优越碰撞反向阻力的物理性能。
Cycle traveling speed of fabrics and dye liquor speed are always faster than fabric's traveling speed. so effective collision and reverse resistance? Force are generated during dyeing.
用物体与气体分子碰撞模型来分析物体的收尾速度以及所受空气阻力。
By the falling body with the gas molecular collision model, the resistance of a falling body is received, and the extreme speed of the falling body is analyzed.
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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