查询词典 triangular matrix

The size of the equivalent stiffness matrix of the outer-domain is only related to the number of the crunode in the interface between inner-and outer-domain,so the final stiffness matrix has a very small size.The numerical results agree well with the analytical solutions and the present method is simple,quick and has a good convergence.

无限相似单元法是无限剖分与有限元方法的结合，它打破了有限元法的限制，把计算域剖分成无限个"有限"大的单元，同时采用一些数学方法，解决了求解无穷多个单元的问题[3—11]。

The algorithm constructs a new matrix called spatial signature matrix in cumulant domain by application of eigen decomposition.

该算法构造了累量域空间特征矩阵，通过对空间特征矩阵的特征分解得到用户信号的空间特征估计。

The clear water that day of the 2-3 that irrigate air wants when watering is advisable, and when watering, should irrigate in plant ' cup ' in shape, in irrigating the matrix in flowerpot directly, even if slant in the matrix inside the basin dry, xie Beizhong has the word of water, plant still grows good, but if be the humidity in basin earth only big, and Xie Beizhong is anhydrous a plant is lacklustre, occurrence leaf easy hair is yellow wait for harmful response.

浇水时要浇晾2-3天的清水为宜，且浇水时要浇在植株的'杯'状中，不要直接浇在花盆的基质中，即使是盆内基质中偏干，叶杯中有水的话，植株依然生长良好，但假如只是盆土中湿度大，而叶杯中无水则植株无生气，出现叶子易发黄等不良反应。

Flame retardant POM composites were prepared using TPU as carrier to introduce melamine cyanurate into POM matrix, and even dispersion of MCA in polymer matrix was obtained. The prepared flame retardant POM possesses good mechanical properties and flame-retardancy.

采用三聚氰胺氰尿酸盐／聚氨酯复合阻燃剂阻燃聚甲醛，阻燃剂粒子均匀分散于聚氨酯分散相中，解决了阻燃剂与聚甲醛直接共混相容性差、材料性能劣化的难题，获得了阻燃性能和力学性能较好的阻燃聚甲醛材料。

Based on the characteristics of molecular structure, the adjacent matrix and dyeing matrix were used to characterize the molecular structure of alkane and cycloalkane, a new method——the group contribu-tion method, was developed to calculate the boiling points of alkane and cycloalkanes from molecular struc-ture.

根据分子结构的特点，通过用邻接矩阵和染色矩阵表征分子结构，发展一种根据分子结构信息计算烷烃和环烷烃沸点的新方法——基团贡献法。

The results under the oil lubricate friction conditions were similar with those under the dry friction conditions. The wear mechanism of 3Cr13 matrix alloy was micro-cutting and distorting wear. For the composites with a low fraction of TiC particle, distorting wear dominated and cutting was partly operating. For the composites with a high fraction of TiC particle, stress fatigue wear and wear of hard phase decohesion has occurred, but the main wear mechanism was still distorting wear. When the wear experiments were performed under the oil lubricate friction conditions, the main wear mechanism has became to abrasive wear and fatigue wear for the composites with the low TiC fraction, and fatigue wear would be to dominate for the composites with the high TiC fraction. There were similar wear mechanisms in H13 and 1Cr18Ni9 matrix composites.

在干摩擦条件下，3Cr13基体合金的磨损机理为显微切削和变形磨损；低体积分数的复合材料磨损机制以变形磨损为主，兼有少量的切削磨损机制；高体积分数的复合材料磨损机制以变形磨损为主，兼有应力疲劳磨损和脆性相剥落磨损；在油润滑摩擦条件下，3Cr13基体合金的磨损以磨粒磨损为主；低体积分数的复合材料磨损为磨粒磨损和疲劳磨损；高体积分数的复合材料磨损以疲劳磨损为主。H13、1Cr18Ni9基体及其复合材料的磨损机制类似于3Cr13基体及其相同体积分数的复合材料。

This article mainly discusses four kinds of solution system of linear equations,such as Elementary operations, the tecnique of Orthogonalization,Gaussian elimination method and Block matrix,and some ways that how to solve the multiple polynomial equations and decomposite the multiple polynomial matrix.

本文主要讨论了利用初等变换、正交化的技巧、高斯消去法和分块矩阵的四种求解线性方程组的解法，以及一些关于多元多项式方程组求解和多元多项式矩阵分解的方法。

With the aid of the spectral decomposition and finite expression formula of matrix we can compute matrix function.

利用矩阵函数的谱分解与有限表示形式计算矩阵函数。

In this paper another deductive proof of the algorithms for the recursive solution of the system of linear equations with a Toeplitz coefficient matrix is considered, and formulas for the specific recursive solution of the various forms of the system of linear equations in accordance with a Toeplitz coefficient matrix are given.

本文给出了具有托布里兹系数矩阵线性方程组递推解法算式的另一推导证明方法，并给出了基于托布里兹系数矩阵的各种线性方程组的具体递推解法公式。

On the basis of force density matrix of cable element ,a force density matrix of triangle membrane element is introduced.

本文在已有的索单元力密度矩阵的基础上推导了三角形膜单元的力密度矩阵。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。