网状数据库

It is almost half century that western countries focus on scientific history, scientific forecast, scientific structure research by citation method, while in China, the related investigation are nearly blank.Differences among citation indices, In China, researchers accustomed to use chain index such as the number of citation, at the same time, western scholars incline to net index for instance: co-citation, bibliographic coupling.Differences among citation databases.

在此基础上对国内外引文分析应用研究中的三个主要差异进行了比较，1 研究对象的差异：国外很早就开始重视引文分析方法在科学结构、科学史领域的研究，国内则几乎是空白。2 引文指标与分析方法的差异：国内侧重对引文链状指标的运用，而国外则相对更重视网状指标的应用。3 国内外引文分析数据库的差异。

Reservior description ; Database schema System ; Network model ; Computer program ; Computer language

油藏描述；数据库系统；网状模型；计算机程序；计算机语言

It is better for describing the hierarchy/reticulation feather of document in large-scale project and improve the efficiency.

提出了层次/网状相结合的概念模型，用于库的设计，便于自然的描述大型项目中文档/图纸的层次/网状特征，提高查询效率；此外，在系统的Client/Server结构中，提出了Client端的局部Cache数据库及其一致性控制，以降低服务器负载，提高系统的整体性能。

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。