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Bear in mind that the shortest distance that two infinite short surfaces can approach each other before contact is in the direction of the contact normal.
This leads to independent of the location of the section under observation along the z axis.
Bear in mind that the shortest distance that two infinite short surfaces can approach each other before contact is in the direction of the contact normal.
记住两个无限接近的表面在接触之前的最短距离是沿着接触点法线方向。
This leads to independent of the location of the section under observation along the z axis.
这导致该该部分沿Z轴观察的位置的独立。