A method for constructing a parametric cubic curve to interpolate a set of distinct data points was presented.

提出了一种构造三次参数曲线对给定数据点插值的新方法。

After comparing several common CAD modeling methods, the cubic parameter-spline curve is used to approach and interpolate discrete contour of usual and complicated rocket jet.

通过对几种常用的CAD造型方法的比较，对常用而复杂的喷管离散点型轮廓段的拟合插值采用三次参数样条曲线来完成。