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从图解法的观点来研究绘制圆锥渐开面的三视图及其展开图的方法，并讨论了完整球面上球面渐开线的支数Ｚ与球半径和圆锥底面半径之比Ｒ／ｒ的关系
From the point of view of the graphic method, we study the three views of the conical involute surface and the method of its unfolding, and discuss the relationship between the number Z of the spherical involute and the radius R / r of the radius of the cone and the radius of the cone bottom on the complete spherical surface