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To give the definition of the mass concrete and to concrete\'s cracks together with practical meanings of control ,and give a brief review on the research in the field at home and abroad, at last, methods to control temperature crack of the mass concrete from several aspects such as design measures,concrets material, construction schedules.etc are summed up; To explain the physical mechanics of the concrete and computing methods-Difference Method and Finite Element Method, and illustrate the application of their specific methods repectively;Several temperature factors that can influence the temperature stress of mass concrete baseplate are analyzed. The influence degree of temperature factor can be got through the ANSYS simulation computation the control of temperature can control the temperature stress, consequently control the temperature crack of mass concert baseplate; through the influence of the crack resistance ability of mass concrete baseplate which takes the reinforcement as a part is analyzed. By ANSYS simulation, the best suited volume ratio of reinforcement is found out, at same time the layout of reinforcement with the same volume ratio can also affect the resistance ability of mass concrete baseplate. Sum up of above analysis, anti-crack function of steel bar in early mass concrete baseplate is obvious, so it\'s necessary to consider beneficial effect of construction steel bar in research of temperature control on mass concrete baseplate.

本文先容了大体积混凝土及混凝土裂缝的基本概念，对国内外在这个领域里的研究现状作了扼要叙述，并从结构设计、混凝土材质、施工措施等方面总结了大体积混凝土温度裂缝控制的方法及防止措施；阐述了混凝土的基本物理力学性能，总结了大体积混凝土温度计算的方法——差分法和有限元法，并分别举例说明其具体应用的方法；分析了影响大体积混凝土底板温度应力的几种温度因素，利用ANSYS模拟计算，得出了每种因素的影响程度，通过分析提出了在这几种温度影响因素下如何通过控制温度以达到控制温度应力从而来控制裂缝的具体建议；针对大体积混凝土基础底板中配筋的不同对混凝土底板抗裂能力的影响不同，利用ANSYS进行模拟分析，得出底板中最合适的体积配筋率，同时分析了在相同体积配筋率下钢筋的具体布置对大体积混凝土基础底板抗裂能力的影响，分析表明，配置钢筋对混凝土结构的开裂阻止作用明显，在研究大体积混凝土温度裂缝题目时，要考虑钢筋在其中的有利作用。

When you look back over the last several decades, there is a strong correlation between changes in graduate-school enrollment and changes in the unemployment rate,' says Linda Barrington, research director and labor economist at the Conference Board, a New York business research group.

回顾过去的几十年来，研究生入学人数的变化与失业率的变化具有很强的相关性。

Introduction graduation project subject, the comparison and summarizing of research and development being mutually related, the course of research and development, as well as designing the train of thought with realizing thinking over of details, and finally giving out the realization that author is in the graduation project course.keywords :management information system, the data base, the hospital

本文介绍毕业设计课题的选题背景和意义，相关的研究和开发的比较和综述，研究开发的过程，以及设计思路和实现细节的考虑，最后给出了作者在毕业设计过程中的体会。

The laboratory construction status relate directly to the hospital s scientific research level. With reformation of medical treatment sanitation system and constant improvement of medical scientific research demanding, just because traditional laboratory management mode has not adapted to phasic requirement, we should establish new organizational system mode of laboratory at the base of the whole hospital.

实验室建设的状况直接关系到医院科研水平的提高，随着医疗卫生体制的改革和对医学科研要求的不断提高，传统的实验室管理模式已很难适应现代化医院科研形势的需求，应建立以医院整体为定义对象的实验室建制模式。

This paper first defines the tacit knowledge in the transfer technology, make sure the research object and research base point of this paper.

本论文首先对技术转移背后的隐性知识进行了界定，确定了本论文的研究对象和基点。

Therefore, the research on term structure is always a basic research in finance field.

所以对利率期限结构的研究一直是金融学领域一个基础性的研究课题。

Using ABAQUS/Explicit simulation research and experiment research, from the view of statics and kinematics, it deeply analyzed the basic rules of cold ring rolling deformation, researched the distribution laws of residuary stress, deduced formulas about moving parameters of rollers and constructed design and optimization model for technology parameters. All above researches provided academic and experimental basis for the development of cold ring rolling technology.

本文通过ABAQUS／Explicit有限元模拟研究和实验研究，从静力学、运动学方面，深入分析了环件冷辗扩变形基本规律，研究了残余应力分布规律，推导出了轧辊的运动参数设计公式，建立了工艺参数设计和优化模型，为环件冷辗扩技术应用发展提供了理论和实验依据。

And then compare the different research methods those researchers have taken in their studies, which aims at finding deficiencies and drawing experiences from the past. And basing on that, I point out some research directions in this field.

全文分六部分，内容如下：第一部分介绍了国内外信息界在信息服务价格问题上已取得的研究成果，并对国内外学者在这个问题上的研究方式和方法进行对比分析，目的在于吸取借鉴国内外学者研究过程中的成功经验，发现研究的不足之处，并找到该领域今后的研究方向。

Basing on the research and analysis, first it introduces the research purpose and methods.

在分析研究的基础上，首先介绍了研究的目的及策略方法。

It is recommended that the research and prospecting of Guangwang-Kaijiang-Liangping aulacogen should be continuously strengthened, and hopeful of paying attention to the research of the taphrogenesis in progress of exploration of Tarim basin, and drawing on the experience of Puguang giant gas field exploration, in order to discover more and more petroleum resources.

建议继续加强广旺－开江－梁平拗拉槽的研究和勘探；在塔里木盆地的勘探工作中应重视地裂运动的研究，借鉴普光大气田勘探经验，争取发现更多的油气资源。

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。