On the base of above all , the article puts the exchange intervene to the whole of internal and external economic balance to discuss the harmony between exchange rate policy and internal monetary and financial policy , and makes the conclusion that our central bank should widen the range of exchange rate waving , loose the exchange control generally , devalue the rmb to cooperate the internal monetary and financial policy . as to external economy , the author thinks our central bank should enhance the cooperation with the international economy , and describes the relationship between the exchange intervention and our country ' s join in wto . the relationship between the exchange intervention and the opening of our country ' s capital item 在此基础上，文章将央行外汇干预置于一国经济内外均衡的统一整体中，讨论了央行外汇干预的汇率政策与国内货币、财政政策之间的协调，指出我国应放宽汇率波动区域、逐步放松外汇管制，适时进行本币贬值以配合扩张的财政政策和适度宽松的货币政策解决我国目前的经济问题；对外，文章指出央行干预外汇应加强与国际经济的合作，并讨论了外汇干预和我国加入wto及资本项目开放的关系。
In this dissertation , theories of e - mis construction ( e is the abbreviation of electronic which indicates the field of electronic construction ) are introduced first . the theories includes system construction process , system construction model and system construction methodology , which are integrated together and served as an integrated theory of mis developing platform 本文首先引入e - mis ( e为electronic的缩写，代表电力建设行业)系统构建理论：系统构建过程、系统构建模式、系统构建方法三者成为mis系统开发平台构建理论的统一整体，认识论则是贯穿其中的一条主线。
In the simulation and analysis on culvert construction , the method of foundation - pit excavation layer by layer and step by step was used , i . e . the method that makes the surface of excavation have no stress , when the elements were excavated gradually in period of construction . at this process , the state of soil is unloading , the laws of stress field and displacement field with the depth of excavation were studied . based on the obtained stress field and displacement field after the excavation was completed , by using of the newly increased filling - elements " gravity and the grinding force , the simulation of the construction of body of the culvert and foundation - pit ' s filling layer by layer had also been done in this dissertation 用有限元法模拟分析涵洞基坑开挖时，采用分层、分步模拟开挖过程的方法，即将计算域内单元分层“挖去” ，使开挖表面成为无应力表面的方法，分析土体在卸载状态时的应力场和位移场随开挖深度的变化规律；在洞体施工后，回填土体时，据开挖完成时的应力场、位移场，通过逐级增加计算域内的单元数目，施加每级新增加单元的自重荷载，利用有限元法模拟基坑及上覆土体分层填筑的施工过程，这不仅反映土体处于再加载应力状态时，填土受力及变形的一般规律，而且这种将地基? ?涵洞? ?土体作为一个统一整体进行模拟的方法，量化了三者之间的相互作用关系。
Following the development of the study in extracellular matrix ( ecm ) , people find that the ecm is composed of glucoprotein and glycosaminoglycans , and it ' s components induct the cell differentiation in tissues and organs , in turn , it can modulate the function of these 随着人们对生物体细胞外基质认识的深入，明确了它是由不同含量的糖蛋白以及糖胺聚糖组成的按一定比例和结构建成的复杂的有机的统一整体。它的各组成成份，分别诱导分化组织、器官内的不同细胞，通过调节各细胞的生长、分化进而调整组织、器官功能。
