非多项式 meaning in English

nnonpolynomial

And then we introduce bezier , b - spline and non - polynomial curves and surfaces modeling , which include l - splines , helix splines , splines in tension and c - curves etc . by analyzing the characters of bezier curves and b - spline curves , we construct trigonometric polynomial curves in the space of trigonometric functions , which assume the characters of b zier curves and b - spline curves
阐述了cagd中参数曲线曲面造型的发展历史并介绍了bzier方法、 b样条方法以及非多项式曲线曲面造型方法，后者包括l -样条、螺旋样条、张力样条以及c -曲线等。文章以b zier曲线和b样条曲线的特点为基础，在三角函数空间中构造一组具有上述两类曲线特性的三角函数多项式曲线，称其为t - b zier曲线和t - b样条曲线。