在基本几何体的范畴内，提出一种以棱圆为导元素的直纹曲面。
A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies.
摘要在基本几何体的范畴内，提出一种以棱圆为导元素的直纹曲面。
A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies.
介绍了塑料零件流程图的概念、作用及一些基本几何体流程图的绘制方法。
The concept and function of plastic part flow chart, and depicting method of flow chart for some basic geometrical objects are introduced respectively.
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