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采用形数结合的方法 ,研究二次回转曲面间相贯线的投影 ,给出了其投影曲线的几何性质及极位点的数学分析和精确作图方法。
The projection of the intersecting lines between the secondary revolving surfaces is studied by using the combination of the numbers of shapes. The geometric properties of the projection curves and the mathematical analysis and exact mapping of the polar sites are given.