【摘要】 采用Ｂ样条曲面拟合水轮机叶片曲面，以混流式水轮机转轮为例，进行了计算三维图形设计．从计算机显示的图形看：图形画面清晰、色彩鲜明、真实感强，并能直接用于检验叶片设计的光滑性和合理性．该软件可用于任何复杂形体的三维图形设计，能够满足工程设计的要求．更多还原

【Abstract】 The blade surface is defined by B - spline surface and a way of drawing 3D picture of the runner is presented in this paper. By taking Francis runner as example,the picture is clear and stereo and the images are more realistic.更多还原