圈上泽充大华 Geometry-graphical method 风 圈上泽支大学 Geometry-graphical method 公报熊 ▣Assume the cam is static 0 斜 3333 Geometry-graphical method δ 2 S δ1 1 2 3 s1 s2 h O r0 -  1 δ1 s1 2 2' s2 3' 3 h 1 δ ' 1 s1  Assume the cam is static Geometry-graphical method