轴测图学研究──轴测图中椭圆的新画法

New Approach to Make Ellipse in Axonometric Drawing

给出已知椭圆长、短轴绘制椭圆的新方法──旋转对应法和椭圆短轴长度的几何求解──直角三角形法。

In order to improve the construction theory and the method of the orthogonal axonometric drawing as well as its drawing accuracy, two concerned problems are dealt with. The rotation correspondence method of drawing an ellipse from its known major axis and minor axis and the geometric solution method,i. e. the right triangle method of calculating the minor axis are given.