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对混流泵叶轮的制造问题进行研究。并描绘出制造相关的几何模型，提出了斜等距曲面的概念及相关公式，并介绍它们在制造混流泵叶轮中的应用，最后用实例验证所述方法的可靠性。
Research on the manufacture of Francis pump impellers. And draws the related geometry model. The concept and the related formulas of inclined isometric surface are put forward, and their applications in the manufacture of Francis pump impeller are introduced. Finally, the reliability of the method is verified by an example.