该算法面向动态复杂场景采用层次的自适应空间剖分方法建构物体的平衡包围盒树，然后通过并行遍历包围盒树来加速碰撞检测。
The algorithm builds BoxTreees of arbitrary non convex polyhedra using a hierarchical adaptive space subdivision scheme, and speeds up collision detection by traversing the BoxTrees in parallel.
大部分物体都是电荷平衡的——含等量的电子和质子。
Most things are balanced - with equal numbers of electrons and protons.
一个物体若要在某一点处处于转动平衡，在这一点处的总力矩必须为零。
For an object to be in rotational equilibrium about a certain point, the total torque about this point must be zero.
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