中文说明：
对于给定的数个离散数据点，使用3次NURBS（非均匀有理B样条曲线）进行插值拟合。该算法程序能够反算出NURBS曲线控制点并绘制经过给定离散点的插值曲线。
English Description：
For a given number of discrete data points, cubic NURBS (non-uniform rational B-spline curve) is used for interpolation fitting. The algorithm program can back calculate the control points of NURBS curve and draw the interpolation curve passing through the given discrete points.