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使用微分几何原理．对径流式前倾后弯压气机叶轮的椭圆线造型进行研究，建立了数学模型，最终给出计算机辅助设计程序的设计例图
Use differential geometry principle. The research on the oval line modeling of the radial front-runner compressor impeller and the mathematical model are established. Finally, the design examples of the computer aided design program