研究工程

According to the results of this study, the owner should take action on the drawbacks of building industry system. For example, firstly, the purchase system should be reformed to avoid the malignment competition; secondly, the content of project contract must be reviewed to set up the fair and reasonable contract by the responsible attitude and the additional agreements; thirdly, the professional ability on the area of purchase of clerk should be improved. The design supervise should have professional ability to supply technical service and should be responsible for the loss which caused by the improper design.

根据研究结果得到了三个结论，第一：业主应审慎思考工程采购制度中最低价决标的存废，推动最有利标决标，以杜绝抢标、恶性竞争发生；第二：订定公平合理之工程契约，增列仲裁条款之规定，提升承办人员采购专业能力等；第三：设计监造单位对於提供技术服务工作应有相当程度的专业能力。

The reasons are probably that the micro-environment of cultivation is not perfect enough, engineered bone can not achieve the synchronization of vascularization and neurotization, and construction of the complex of tissue-engineered bone and periosteum is still lack of research.

可能的原因是细胞的培养微环境不够完善，没有实现组织工程骨的同步血管化和神经化，组织工程骨与骨膜复合体的构建目前仍缺乏研究。

The reasons are probably that the micro-environment of cultivation is not perfect enough, engineered bone can not achieve the synchronization of vascularization and neurotization, and construction of the complex of tissue-engineered bone and periosteum is still lack of research.

可能的原因是细胞的培养微环境不够完善，没有实现组织工程骨的同步血管化和神经化，组织工程骨与骨膜复合体的构建目前仍缺乏研究。仁和代写代发医学论文：提供专业的医学论文写作指导，修改，翻译，发表服务。

BACKGROUND: In bone tissue engineering researches, we are confronted with a problem of how to rapidly vascularization in the transition from experiments in vitro to osteogenesis in vivo. Only early establishment of blood supply can maintain the osteogenetic advantage of tissue-engineered bone.

背景：在骨组织工程研究中，面临从体外实验过渡到体内成骨时如何快速血管化的问题，尽早建立血运才能保留组织工程骨的成骨优势。

The analysis of the test road show that the overlayer used in the engineering ofPudong nan road has worked well for half and two years and the reflection cracking hasnot be found.

试验路研究和实体工程分析表明：浦东南路旧路改建工程加铺层效果较好，至今已二年半左右，未见反射裂缝出现。

Since Watson and Crick have brought forward the model of DNA helix structure and explain about it's reproduce mechanism in molecule level, research work concerning DNA has been continuously lucubrated. However, whether translating inheritance information and rebuilding DNA molecule via menstruating DNA sequence, or to date the most compelling gene project, chromosome protract et. al, there all need a sort of molecule scissors cleaving DNA, DNA cleavage reagent. At present, tool enzyme of cleaving DNA is mostly DNA restriction enzymes founded in 70 years, which only cleave DNA at specific 4-8 base pair sequences that are usually palindromic, so this restricts the at very fast speed developing of gene technology at certain extent.

自从Watson和Crick提出DNA的双螺旋结构并对其复制机制在分子水平上进行解释后，使得对DNA的研究不断深入，但无论是通过测定DNA的序列来破译遗传信息、改造DNA分子，还是目前最令人关注的基因工程、染色体绘制等，都需要一种断裂DNA分子的&剪刀&——DNA断裂试剂，目前断裂DNA的工具酶主要是上个世纪70年代发现的DNA限制性内切酶，但所知的Ⅱ型限制性内切酶的DNA序列识别长度较短（约为4～8个碱基对），而且一般要求回文结构，这就给飞速发展的基因工程技术带来一定的限制。

It has important effects for the stability of water conservancy building,the using of groundwater resource,the pollution controlling,the exploitation of rock oil and natural gas.And the needs of projects for those fields are increasing home and abroad.So the research of seepage flow becomes focuse.In this article,a saturated and unsaturated seepage model has been established which includes double variables:piezometric tube waterhead and saturation.

渗流现象是多孔介质中普遍客观存在的运动规律，其对水工建筑物稳定性、地下水资源利用、污染控制、石油天然气开采等工程问题均具有重要的影响，随着国内外在上述领域中工程需求的增加，渗流研究日益成为热点问题。

Along with rapid development of technology.all sorts of engineering structure became more and more gigantic; for the sake of their credibility and good function, motive characteristic problem of the structure become an important topic in the engineering technique realmwhich need an earnest research and settlementln the windproof and quakeproof design of the structure and the bridge,the natural frequency of the structure vibration is a very important parameter.

摘要随着科学技术的飞速发展，各种工程结构愈加巨型化，为了保证它们的可靠性和良好的性能，结构的动力特性问题越来越成为工程技术领域里需要认真研究和解决的重要课题。

Although the EPRI give a set of the approximate engineering solution method, actually the crack of parts in engineering project mostly presents inner 3D effect. If using 2D elastic-plastic or 3D elastic analysis, the result can't be precise. Because these methods have neglected the reassignation of the stress and strain which happened at nearly the top of cracks, carrying on 3D elastic-plastic analysis and J-integral calculation become the foundational work to study the expander and safety assessment of the pressure vessel cracks.

虽然EPRI给出了一套近似的工程解法，但实际上工程中构件的裂纹大多呈现内在的三维效应，若使用二维弹塑性或三维弹性分析必然不够精确，因为对裂纹的&等效&二维表达忽视了发生在靠近裂纹端部的应力和应变的再分配，所以对压力容器裂纹进行三维弹塑性分析及其J积分是研究压力容器裂纹扩展和安全评定的基础工作之一。

There is still a great distance the classic economic result.Component prefabrication and installation is a very important and common used work in construction,and installation is much more difficult in which while harbors or other engineering that under the water are constructed.Installation style will play an important role in the engineering cost.As a resuit,there is a great sense in researching advanced,practical,efficiency installation technique.

在港口码头及其它水工工程中，构件预制和安装是一种很常用、很重要的施工内容，其中构件的安装更是一项技术难度较大的施工内容，不同的安装方法也在很大程度上影响工程成本，因此研究先进、实用、高效的安装施工技术，具有重大的意义。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！