即

Since a proposed application of Dirac structures is to the reduction of some mechanical systems, the reduction of Dirac structures is considered in detail in this paper, without using the existence of momentum mappings or the introducing of the notion of admissible function, etc..

因为引入Dirac结构的—个基本目的即应用于一些力学系统的约化，本文详细地讨论了Dirac结构的约化问题，包括其在Poisson流形以及Jacobi流形等的约化中的重要应用，重点利用了Dirac结构的特征对以及对偶特征对的工具，从而避开了讨论矩映射的存在性以及容许函数等一些复杂概念的介入。

In Chapter 2,a steady permeability identification problem in elliptic equa-tions for two-dimensional orthotropic medium is considered.We construct afunctional,obtain its first and second Gateaux differential,and prove that thefunctional is strictly convex on a convex admissible function set.We seek to iden-tify the permeability by minimization of the above functional.

第二章研究了二维稳态正交异性介质的渗透率反演问题，我们构造了一个泛函，求得该泛函的一、二阶Gateaux微分，证明了它在一个凸的容许集上的严格凸性，并使用极小化泛函即变分方法来求解此问题。

HE's good at four languages:chinese,english,russian adn french.

他精通四门语言，即汉语、英语、俄语和法语。

Under this background, this article studies how to satisfy the consumers' current requirements of service function and consider the development of these demands in the entire life house. That is to say, how to utmost prolong its functional life in the physical aging so as to improve their adoptability of entire life.

该文研究了在上述背景下，面对小套型住宅的主体消费人群，如何在设计中既满足他们当前对住宅使用功能的基本要求同时又能充分照顾到住宅全寿命过程中人们对建筑功能要求的变化与发展，即如何在小套型住宅物质老化期内充分延长其功能寿命，提高小套型住宅的全寿命适应性。

When the moment made by material on turning plate is greater than that of heavy hammer and rocker, the disc will open adown to discharge. After discharge the moment made by heavy hammer and rocker will drive disc close quickly to realize locking air. Because the structure of valve is two-layer, there is always one disc in pipe that is in close condition. So it can discharges and lock air at the same time.

即当作用于翻板上的物料产生的力矩大于重锤摇杆产生的力矩时，阀板打开卸灰，一旦积灰卸去后，重锤与摇杆产生的力矩使阀板迅速关闭，实现锁气是由于本阀采用的是双层结构，因而使管道上阀板始终有一个是关闭状态，可使卸灰与锁气同时达到目的。

Shortly thereafter he was expelled from Tehran to Baghdad , in the Ottoman Empire ;[6] then to Constantinople; and then to Adrianople.

此后不久，他被从波斯驱逐到奥斯曼帝国的巴格达[2] 、伊斯坦堡、亚德里亚堡。在这个时期，巴哈欧拉与巴哈伊另外一个有争议的领袖、也即巴哈欧拉的弟弟Subh-i-Azal之间的关系紧张，为避免引起争斗和分裂，他避世隐居於苏雷曼尼叶山区达数年之久。

It is the premise of holding the spirit and ability that whether the students can raise questions with originality adroitly.

学生的问题意识，即能否敏捷地提出问题，特别是能否提出具有创意引发创造的问题，是使学生具有创新精神和创新能力的前提。

Adsorb the paint member to the water will be the protection of the environment, and improve the operational environment.

利用水帘功能，将漆分子吸附到水中，即保护了环境，又改善了操作环境。

The two different kinds of schemes for silica fiber poling,adulterant and/or photoinducing and electrical poling,are discussed in the paper.

首先讨论和比较了两种不同诱导石英光纤的方案，即掺杂物和／或光诱导方案及电场诱导方案，分析了它们各自的特点，在此基础上提出了一种新的诱导方法。

As a result, the partys formation model of early-stage in China is multi-model. This model adumbrate the fail of party politics in the beginning in Republic China.

由上述观点引出一个推论即中国早期政党的产生模式是多元混合模式，这种模式也为民初政党政治的失败打下了伏笔。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。