In chapter 3 , some theories of approximation are given from the point of mathematics and from physics 第三章分别从数学的角度和物理的角度阐述了流固物体曲线拉伸流动问题求解的近似理论。
Base on the practical need , the concepts interval curves and interval surfaces are presented in theory of approximations 基于实际问题的需要,提出了区间曲线和区间曲面的概念,用它来做逼近问题。
The first part in this article has expounded the formulation about theory of approximations problems , and pointed out the research purpose and main contents of this thesis 文中第一部分阐明了逼近论问题的提法,指出了论文的研究目的和主要内容。
In theory of approximations , the classic methods of polynomial approximation for rational expression are various interpolations and operator approximations , such as lagrange interpolation , hermite interpolation and bernstein polynomial approximation 在逼近论中,用多项式逼近有理式的经典的方法是各种插值与算子逼近方法,如lagrange插值、 hermite插值和bernstein多项式逼近等。
Bernstein approximation is one kind of classics and abundant research subjects in the theory of approximations , which mainly makes use of good properties and graceful structures of bernstein polynomials to discuss a great deal of relations between bernstein operators and the functions approached by it Bernstein逼近是逼近论中一类经典而丰富的研究课题,它主要是利用bernstein多项式的良好性质和优美结构来讨论其与所逼近函数之间的诸多关系。