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Eular -Bernonulli beam model and Tomosimko beam model were adapted to study the inherence vibration properties of the pipelines under dynamical loads, and the analytical answers of the chanmical results were brought out in the fifth chapter. And gave priority to the Eular -Bernonulli beam model, the simply and convenient analytical resolution for the response of the pipelines under dynamical traffic loads through the impulse function and the congruence method of the vibration form and so on.

本文采用Eular-Bernonulli梁模型和Tomosimko梁模型对动力下Kelvin粘弹性地基中管道固有振动性状进行了分析，提出了各力学结果描述的解析式；并以Eular-Bernonulli梁模型为主，基于脉冲函数、振型迭加法等对管道在动力交通荷载作用下的管道响应问题提出简单便捷的解析算法；在管道受力结果的分析中，考虑管道响应输出的随机性，将管道响应用随机过程来描述其概率特征，使得结果描述更加真实准确。

This study is an attempt to find out the features of conjunctions in Maritime Law English.

中文文摘：本文旨在发现海商法英语中连词的特点。

Therefore I asks according to design that for the database management system, SQL language principle and Delphi7 application programming of SQL Server2000, Delphi database technology has carried out more thorough study and application , is analysed mainly consummately for the demand of the management system of chicken run , function modular partition and database pattern analysis, and from this, have designed database structural and application program.

因此本人按照设计要求，对SQL Server2000数据库管理系统、SQL语言原理、Delphi7应用程序设计，Delphi数据库技术进行了较深入的学习和应用，主要完成对养鸡场管理系统的需求分析、功能模块划分、数据库模式分析，并由此设计了数据库结构和应用程序。

It must be pointed out that not only the conceptual model of GeoFeature-CA is standing at the moment of academic studying and has great continuative studying space but also GFCA-Urban model is standing at the moment of practical study and the precision and authenticity of GFCA-Urban model need improved.

必须指出的是，GeoFeature-CA概念模型还处于理论探讨阶段，留有巨大后续研究空间，GFCA-Urban模型也还处于尝试性研究阶段，模型的精度和真实性尚待提高。

According to the requirement of open CNC system, study on some key technologies of position control board is carried out in this thesis.

位置控制卡是基于工业PC的开放式数控系统的重要组成部分，它的性能直接影响着机床的加工精度。

To overcome the premature of simple genetic algorithm, the calculating efficiency of SGA is improved by the following two ways; Firstly, in order to ensure convergence of algorithm and reduce influence factor of convergence, elitist selection and adapted crossover and mutation operator are adopted. Secondly, because this study deals with finding minimize volume of structure, to quicken convergence of this problem, in line with mechanics criterion the paper carry out mutation to some genes in chromosome according to variations of internal force. This will let algorithms to search answer with our hoping directions.

针对基本遗传算法存在早熟的问题，本文主要从两个方面进行了改进，首先为了保证算法的收敛和减少影响算法收敛因素，采用了最优保护策略和自适应的交叉和变异算子；其次，由于本文研究内容涉及求结构最小体积问题，为了加快此类问题的收敛速度，本文结合结构优化中的力学准则，对个体染色体中的某一段基因按照内力变化进行变异操作，使得算法按一定方向进行搜索最优解。

By analysis of such models, a method, which is used to find out the region of convergence and to study the local stability for strong nonlinear system, are derived. Thus, we can consider the strong nonlinear neural networks using such method.

利用新的比较方法，考虑了具变时滞和常恢复率的同质人群HIV梯度传染病模型，得到了一个阈值，当阈值小于1时，疾病消除平衡点全局指数渐近稳定，当阈值大于1时，传染病平衡点存在唯一，同时得到该传染病平衡点局部指数渐近稳定的充分条件。

Feel quite comfortable namely, hold out conversable, his father and mother also becomes a teacher, we are having abroad the experience that study abroad, our setting, viewpoint of value compares photograph resembling, in the youth that encounters in me, he also is very crackajack.

就是觉得挺舒适，挺谈得来的，他父母也是做教师的，我们都有着海外留学的经历，我们的背景、价值观比较相像，在我碰到的年轻人中，他也是很杰出的。

First, moving with all care, I gradually baled out the coracle with my sea-cap; then getting my eye once more above the gunwale, I set myself to study how it was she managed to slip so quietly through the rollers.

我先是小心翼翼地用水手帽舀出小艇内的水，然后再一次从船边向上望，看看它何以能够在海浪中如此平稳地滑行。

This study,based on the experiments and data analysis of 10 core sediment sample taken in March,2008,carries out research on current water eutrophication and analyzed the limitative factor of current Baihua Lake eutrophication and proposes the rational disposal measures according to the present condition of eutrophication.

本研究基于对2008年3月所采集样品(10个采样点三个层面)的实验分析与数据总结，对百花湖的富营养化现状进行了研究，指出了当前百花湖富营养化的限制因子；对沉积物中磷的化学形态进行分析研究，指出了磷形态的分布规律；同时针对目前富营养化现状，提出合理性治理措施。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。