查询词典 gis

Parameters of self-energy circuit breaker for 252kV50kA GIS are set according to the technical and developing demand of it in this thesis. Vertical arrangement and principle of self-energy arc-extinguishing are selected to develop this breaker.

本文针对252kVGIS用自能式断路器的技术要求，并结合目前252kVGIS的发展要求，确定了断路器的各项参数，并采用立式布置方式与自能灭弧原理设计开发该断路器。

Then lifeline systems, including road, oil, gas-supplies, water-supplies, electricity-supplies and communication are built.

针对大庆油田的生命线系统，建设了GIS下的道路、输油、输气、供水、供电及通信六大系统数据库。

The road layer in the electronic map of city is drawn by GIS, and the structure

该系统的实现，能够对城市交通道路的选择进行优化引导，能够有效缓解交通压力，具有一定的现实意义。

ShapeFile is a GIS data structure without topological structure. And there isnt road layer for producing a map.

Shapefile是一种无拓扑结构的地理信息系统文件，并且没有地图生成所需的道路层。

The development of population interrelates closely with each other in terms of time and space.

可以看 出人口的时间发展和空间发展是紧密联系在一起的，因此我们作为GIS学科的工作者更加应该考虑人口在时间轴上的空间分布状况，在做未来人口预测时更应考虑预测相应的人口空间分布状况。

In this paper, application technology of GIS, RS and GPS used in agricultural water-saving is researched.

本文主要探索了&3S&技术在节水农业中的应用技术，并获得了初步的成果。

A new technological way for agrochemical service of chemical fertilizer enterprise is presented, which is by means of the management system of soil nutrient and the recommendation system of fertilizer application based on the key technology of GIS.

介绍以地理信息系统为核心技术的土壤养分管理和推荐施肥信息系统在农化服务中的应用，为今后企业开展农化服务工作提供了新的技术手段。

ArcGIS Engine is a complete library of embeddable geographic information system components for developers to build custom applications.

ArcGIS Engine 是一组完备的并且打包的嵌入式GIS 组件库，开发人员可用来创建新的或扩展已有的桌面应用程序。

It is very important to build Chaidam Basin Water Resources Information System by using computer and GIS technology, by selecting the suitable remote sensing information sources and making an integration of all observed data, graphs, statistic data and other available document related to PRED.

PRED综合论证模式方面，提出以人的基本用水需求为出发点，即水资源首先必须满足人的饮用水，其次是满足人的口粮供应而需要的粮食生产耗水，再其次是满足工业生产与经济发展的需水，最后是生态环境用水的论证流程。

The Geographic Information System theory as a guide, point-set topology theory as basis, this paper uses object-oriented method to study on profile-based three-dimensional topological data model and data structure. By use of computational geometry, GIS, computer graphics images, 3DGM, the construction and dynamic updating methods of 3DGM are researched on the basis of amended OO-Solid data model.

本文以地理信息系统理论为指导，以点集拓扑理论为基础，采用面向对象的方法研究了基于剖面的三维拓扑数据模型和数据结构，采用计算几何、地理信息系统、计算机图形图像学等方法研究了基于修正后的OO-Solid数据模型的三维地质模型构建与动态更新方法。

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。