利用光滑模和K -泛函给出了一类多元三角多项式算子同时逼近的正逆定理。
Using the modulus of smoothness and K-functional, direct and inverse theorems of simultaneous approximation for a kind of multivariate trigonometric polynomial operators are established.
为了提高网格简化后的三角形质量，提出了一种新的基于顶点局部多项式曲面拟合的三角网格简化算法。
To enhance the triangle quality of the simplified mesh, a novel triangular mesh simplification algorithm based on local polynomial fitting surface of vertices was proposed.
利用辛变换条件得到了一些新的切比雪夫多项式公式、三角恒等式和双曲恒等式。
In this paper by using the symplectic transformation condition, some new formulas including Chebyshev Polynomial, trigonometric identity, hyperbolic identity were obtained.
本文提出了一种基于三角函数多项式的GPS轨道标准化方法。
A method of standardization GPS satellite orbits using trigonometric polynomial function is put forward in this paper.
本文首先选择由三角函数和多项式组成的挠度函数和应力函数。
In this paper, the deflection and stress function in terms of trigonometrical function and polynomial expression are first proposed.
在第二章中，我们采用截断多项式函数为核函数，解析的给出点、直线段、圆弧、二次曲线和三角面片等骨架的势函数。
In chapter two, using piecewise quartic polynomial as kernel function, we give analytical convolution solutions for points, line segments, arcs, quadratic Bezier curves and triangle segments.
作者以前应用三角级数加多项式的方法解决了悬臂对称三角形板在均布载荷作用下的弯曲问题。
The authors used the method of trigonometric series and polynomial to solve the problem for the bending of a cantilever plate in a symmetric triangular shape under uniform load.
本文首次定义和推导了移位切比雪夫多项式(第一类和第二类)的分离矩阵，它具有简洁的递推关系和三角形结构。
The separative matrices of shifted Chebyshev polynomials of the first and second kinds, which have a nice structure and an elegant recursive formula, are introduced at the first time.
推导出由特征多项式的系数表示的线图（无重边图）中圈的个数，双向结点对个数，单向结点对个数及简单图中有向三角形个数的计算公式，等等。
The formulae for the number of loops, edges, triangles, pairs of two-way nodes and pairs of one-way nodes are deduced by the coefficients of a characteristic polynomial, so on.
在标准模糊系统的基础上提出了以正规二次多项式和正规三角函数为基函数的两类标准模糊系统。
This paper establishes the standard fuzzy systems with partition of normal quadratic polynomial membership functions and normal trigonometric membership functions.
本文提出了一个在三角形域上的有理布尔和插值的新方法，此方法的特点是所构造的插值函数结构简单，多项式准确集较高。
A new method of rational Boolean sum interpolation on an arbitrary triangle is developed in this paper. The structure of the interpolation function is simple.
本文提出了一个在三角形域上的有理布尔和插值的新方法，此方法的特点是所构造的插值函数结构简单，多项式准确集较高。
A new method of rational Boolean sum interpolation on an arbitrary triangle is developed in this paper. The structure of the interpolation function is simple.
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