查询词典 gis

Based on the data from boreholes and derived, an independence fault model was presented which with duo-TIN surface structure. This model includes 9 geometric elements, and 14 kinds of topological relationships can be expressed.

4以3D GIS应用为目的，提出了构建独立断层数据模型的思想，并基于钻孔数据和派生数据提出了一种具有双TIN面结构的断层模型。

This paper introduced the planning principle and design idea of comput er aided web site planning decision-making support system which based on the G I S (Geographical Information System), and brought forward the technical solution of web site planning based on the principle of the balance of the supply and deman d.

介绍了基于GIS的计算机辅助网点规划决策支持系统的规划原则和设计思路，提出了基于供需平衡原则的网点规划技术方案。

In order to match the observation data, the structure of database will be organized according to drainages. So automated extraction of the flow network and drainages is a premise of all other works.

为了从数字高程数据中自动提取全国流域，以提高基于GIS的全国水资源信息获取的效率，从DEM的特性出发，提出了一种从DEM中自动提取全国流域的实用方法。

On the other hand, this article listed the AML code for automated extraction drainages from DEM data. Finally the authors checked the result of automated extraction using some surveyed data in Haihe drainage area. Through analysis on the comparison between the flow networks and drainage area that extracted using this method and surveyed data, it is concluded that this method is effective and efficient.

另外，还给出了利用GIS软件ARC/INFO GRID提取全国流域的AML程序代码，并以海河流域作为实验区将抽样测量结果和自动提取结果进行了实验对比分析，其结果表明利用该方法提取的流域数据与利用手工方法绘制的流域基本一致，证明该方法是有效的。

NET and using Flash object-oriented programming method to manage spatial en-tity and layer.The result shows that this method is simply and efficient to develop low-cost and high-quality interactive map.

随着城市数字化建设的进一步完善，开发人员希望能开发出高效、高性能的产品，而用户则关心的是GIS产品的美观界面和易用性，这对WebGIS的表现形式提出了更高的要求。

Historical maps; China; maps; GIS; gazetteers; spatial data; data bases

关键词：历史地图；中国；地图；地理信息系统；地名词典；空间数据；数据库

Data is the most important part of GIS.

数据是地理信息系统的重要组成部分。

In this paper, the advantages of GIS and its application in the study of snow disaster was introduced.

本文主要介绍地理信息系统技术在牧区雪灾监测研究中的应用。

The application of GIS in AIDS is becoming more and more important and will have a wide future.

将地理信息系统应用于艾滋病领域正在受到越来越多的重视，因此有着广泛的开发和应用前景。

GIS ; BSc programmes ; MSc /PgD pro grammes ; joint programmes ; overseas universities

地理信息系统；本科课程；研究生班课程；联合课程；海外大学

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。