引言

In Chapter 1,we consider the numerical methods for the averaging model.

为引言部分，给出描述问题的数学模型及假设条件。2。

In this paper the advantage and disadvantage of the application of COTS used in the avionics software field are described.

1引言目前，在军用航空电子系统的发展和现代化过程中，软件起着举足轻重的作用。

In the assembly of freight train wheels, bolts are assembled onto the axletree in-group with the bolt lid.

1引言铁路货车轮对的轴承采用的是组合螺栓端盖压紧结构，即采用三个紧固螺栓通过前端盖压紧轴承的内圈来紧固轴承。

Atmospheric background radiation is very important to the research of space early warning system.

0引言空间预警系统是弹道导弹防御系统中的一个重要组成部分[1-2]。

Foreword explains the background of putting forward the task to study the influence between shareholding structure of public company and its performance in China, point out the significance and value of this thesis and the questions we will research in the thesis.

引言：介绍我国上市公司股权结构对公司业绩的影响研究这一课题提出的背景状况，指出本论文研究的意义和价值以及论文所要探究的有关问题。

The process of zero adjusting is complex and time-consuming in traditional balance bridge measurement.

引言按照输出测量方式，电桥可分为不平衡桥式电路与平衡桥式电路。

This paper introduces emphatically the technology of oversea tethered balloon-borne surveillance radar system, its developmental status and applications,differends units of this system.

一、引言系统均是采用的系留气球。进入80年代以来，随着军事技术、战术理论以及常规武器现代化的发展，各国均十分重视发展本国的远程监视雷达系统。

In this paper, an extended divide and conquer algorithm is intended proposed, which is for solving the real symmetric band generalized eigenvalue problem under distributing environment Eigenvalue partition theorem is presented and proved Based on divide and conquer by extension, this algorithm computes generalized eigenpaires of symmetric band matrix pencil by bisection and generalized Rayleigh quotient iteration Theoretic analysis and numerical results show that this algorithm is better than the classic software package LAPACK when bandwidth is small and the scale is large Combined with multisection, which has good parallelism, it got good effects under distributed environments

提出了分布式环境下计算对称带状广义特征值问题的一种扩展分治算法，给出了特征值分割定理及其证明算法在扩展分治的基础上，利用二分压缩结合广义Rayleigh商迭代计算广义特征对理论分析和数值实验表明，对于窄带宽大规模的广义特征值问题，该分治算法明显优于LAPACK软件包结合并行性好的多分法，在分布式环境下获得了很好的并行效果1 引言本文研究了对称带状广义特征值问题Ax =λBx ( 1)的并行计算，其中，A ，B均为半带宽为r的n阶实对称带状矩阵且其中之一是正定的本文总假设B是正定的求解此问题有两种传统方法，第1种方法是通过计算矩阵B的Cholesky分解，将问题( 1)转化为标准特征值问题[1～3] ，进一步

This chapter is put forward to on base of the preface.

这个章节是在引言的基础上提出来的。

This text describes the basie train of thought and the basie method of the reform of the computer hardware teaching of computer science and technology speciality in Chinese normai universities from the angle of the social develop-ment in the 21 st century.

1引言 计算机系统是由硬件系统和软件系统构成的，硬件系统和软件系统既相对独立又相互作用，相辅相成，构成一个完整的系统，并且缺一不可。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。