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应用双三次均匀Ｂ样条曲面，建立了对给定型值点的汽轮机叶片进行曲面构造和等距曲面计算的数学模型，为叶片型面的数控加工提供了依据。
The double cubic uniform B-spline surface is used to establish the mathematical model of the curved surface and equidistant surface of steam turbine blade for a given type point, which provides the basis for the numerical control machining of the blade profile.