有理曲面 meaning in English

rational surface

In the final chapter , we discuss interval polynomial approximation of rational surfaces . firstly , we briefly state the interval - surface approximation based on the taylor expansion , and later , we give out a better interval - surface approximation based on the optimization method , which is also the main work of this paper
第四章主要介绍了有理曲面的区间多项式的逼近，首先简单介绍了基于泰勒展开来做的区间曲面逼近，后面是本文的主要工作，我们基于优化方法得到了更好的区间曲面逼近，它也是本文的重要部分。
This paper studies the rational b - splines curves with prescribed poles and surfaces for the first time , and studies the properties of this new surface modeling . the result indicate that this modeling not only have the property of geometric modeling , but also have the agility and availability , and score the singular of curve
本文首次构造了指定极点的有理b样条曲线曲面,并深入研究了这种新颖曲面模型的性质,结果表明该有理曲面模型不仅具有几何造型的特点,而且更灵活、更有效,并能刻画曲线的奇性等固有特性