非对称

This thesis presents some refined algorithms for large unsymmetric matrix eigenproblems and investigates their convergence and restart.

本文研究求解大规模非对称矩阵特征问题的一些精化投影算法、算法的收敛性以及算法的重新启动等问题。

An airplane wing made of unsymmetric composite structures was designed.

验证了非对称复合材料结构在机翼设计中应用的可行性。

Arnoldi method is very efficient for computing the extreme eigenpairs of large unsymmetric matrices.

迭代Arnoldi方法是求解大型非对称矩阵特征问题的一种常用的有效方法。

Chapter one gives the background of large unsymmetric matrix eigenprob-lems and basic numerical algorithms for solving them.We review the state of theart of this subject.

第一章介绍大规模非对称矩阵特征问题的来源、解决这类问题的基本方法以及本学科的发展现状。

Based on the experimental study of a prestressed frame of two spans under unsymmetric loading, the moment modulation of prestressed frames has been discussed.

本文通过对一榀足尺两跨后张有粘结非对称加载预应力框架的试验研究，探讨了预应力混凝土框架的内力重分布问题。

According to the method for the bending analysis of composite laminates developed by the authors, Green's functions of an infinite unsymmetric laminate with elliptic hole or crack are obtained.

运用作者建立的复合材料层合板问题的求解方法，得到了含椭圆孔和裂纹的无限大非对称层合板在广义集中载荷作用下的Green函数。

And the minimalproperty is retained. The second aspect is the incomplete GMERR method forsolving unsymmetric linear systems.

第二个方面提出了求解非对称线性方程组的不完全 GMERR 方法。

Unsymmetric gear ; pressure angle ; tooth face contact stress ; analytic method ; finite element analysis

非对称齿轮；压力角；齿面接触应力；解析法；有限元分析

We study the unsymmetric large sparse linear systems under distributed-memory environments. We present the Modified BiCG. And we also propose the s-BiCG methods which is suitable for parallel computing.

9研究了非对称大型稀疏线性方程组的分布式并行求解，在提出修订的BiCG算法的基础上，提出了一种适于并行计算的s-BiCG算法。

In Chapter One we give the background of large unsymmetric matrix eigenproblems and basic numerical algorithms for solving them. We review the state of the art of this subject. Finally, we describe the work of this thesis. In Chapter Two we make two improvements for the Jacobi-Davidson method combining with the refined projection principle.

本文正是在这一思想的引导下，对Jacobi-Davidson类方法进行了研究，全文共分四章：第一章介绍大规模非对称矩阵特征问题的来源、解决这类问题的基本方法以及本学科的发展现状、最后介绍本文所作的工作。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。