The effective friction coefficient is applied to the study of the oblique impact of a rigid sphere against a ductile solid.
此有效摩擦系数被应用于研究刚性球自由斜冲击延性靶问题。
The projection of the special points on the intersection line of cylinder with oblique cylinder , of cone with half sphere and of oblique cylinder with cone are determined with the analytic method.
本文用解析法确定圆柱与斜圆柱、圆锥与半球及斜圆柱与圆锥的交线上特殊点的投影。
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