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中文说明：这是NURBS曲线的绘制程序，在matlab-2008a环境下进行编写，包含了几个基函数子程序。可以通过调节控制顶点和点的权重来调节曲面形状。
English Description：
This is the drawing program of NURBS curve, which is written in matlab-2008a environment, including several basic function subroutines. The shape of the surface can be adjusted by adjusting the weight of control vertices and points.NURBS曲线
.........\blending_function.m
.........\blending_function_u.asv
.........\blending_function_u.m
.........\findspan.m
.........\main_NURBUS_curve.asv
.........\main_NURBUS_curve.m
.........\main_NURBUS_curve_test.asv
.........\main_NURBUS_curve_test.m
.........\sub_Knot_vector1.m
.........\W2=1.fig
.........\W2=2.fig
.........\W2=3.fig