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Firstly establishing mechanical model of casing structure , and then processing casing forces analysis using space finite-element method and superposition method(put structure stress and outer force stress together), it computes the stress of casing in three dimensions, and gets the internal force and transmutation. The structure of casing-coadjutor is computed overlaply and the question of contact is solved. In the aspect of design, it provides the mixed integer-discrete variable optimization method of casing cross section size and coadjutor layout.

本文就上述两个问题的最优化设计展开研究，首先建立了套管结构的力学模型，进行套管的受力分析，用了空间有限元法和叠加法(结构应力和外载应力相叠加)，对套管进行三维计算，确定结构的内力和变形，对套管—扶正器结构进行整体的叠代计算，解决接触问题；在设计方面，提出了解决套管截面尺寸参数和扶正器布局的混合整数—离散变量优化方法。

Greek coastguard officials have opened an investigation into the incident.

希腊海岸警卫官方已对此事展开了调查。

While the Senate hearing was unfolding in Washington, the coastguard and the MMS held their own hearing outside New Orleans to look at the developing theories as to what went wrong.

参议员听证会在华盛顿展开的同时，海岸警卫队和美国国家矿产局也在新奥尔良外举行自己的听证会，来完善关于事故原因的"理论"。

Let us begin to map, you will find all of the mainland coastline facing the Pacific Ocean.

让我们来展开地图，你会发现大陆的海岸线全部面向太平洋。

Hostor will cooperation with the more than twenty associations of paper、printing、packing in nine provinces of"9+2"districts of coastwise , eighty famous medias will unite to announce the information to everywhere of China and every end users.

主办单位将会同泛珠三角"9+2"区域的华南9省及港澳地区20多家纸业、印刷、包装协会，80多家专业主力媒体，整合各种传媒资源，形成宣传合力，展开全方位的立体宣传，使本届展览会各种信息传播到纸业、印刷、包装和相关领域的每一个角落，传播给每一个最终的专业目标用户。

This thesis takes Wudongde hydroelectric power station upstream high rockfill cofferdam as the object to study,and carries out the research on seepage and stability of slope.

本文以乌东德水电站上游高土石围堰为研究对象，从渗流和边坡稳定两方面展开研究。

The readers' commentaries discuss specific aspects of analytical writing, such as cogency of ideas, development and support, organization, syntactic variety, and facility with language.

评分官的评论讨论了具体的分析和写作的方面，例如思想的说服力，展开和支持，组织，句法多变性，以及语言搭建。

Secondly, the relation between restrict law and price increase is not well supported and cogently proved.

这段也是展开的问题，即使你的观点很整确也没有说服力。

The discussion is smoothly and logically organized, and each point is thoroughly and cogently developed.

作者能够流畅且具有逻辑性地组织他的文章，每个要点的展开都很彻底并且令人信服。

2At drive than will certainly,driven gear, while having the more same sizes, hyperboloid have diameter not larger of gear wheel not initiative than corresponding spiral awl gear wheel, intensity and bigger initiative gear wheel axle and bearing rigidity of higher teeth of a cogwheel.

螺旋角是指在锥齿轮节锥表面展开图上的齿线任意一点A的切线TT与该点和节锥顶点连线之间的夹角。在齿面宽中点处的螺旋角称为中点螺旋角(图5—4)。通常不特殊说明，则螺旋角系指中点螺旋角。双曲面齿轮传动比为

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。