查询词典 gis

GISis a computer technique used for analysing and managing the geoscientific spatial data.

GIS是一种利用计算机分析和管理地学空间数据的技术。

Satellite application technology has been closely connected with geoscientific research for a long time. It develops from the initial remote-sensing application to the spatial information technologies containing RS, GIS, GPS and so on. Satellite application technology has promoted the researches of geoscientific theory, the quantitative and qualitative analysis, and has accelerated the development of geosciences.

卫星应用技术与地学研究很早就存在密切的联系，从最初单一的遥感应用发展到包含遥感、地理信息技术、全球定位系统等多种技术在内的空间信息技术，卫星应用技术促进了地学理论研究和定性、定量的分析验证，加速了地球科学的发展。

VRGIS is a virtual reality technology, which can researches geosciences or takes geoscientific system as object, as well as is a rising research branch of GIS recently.

虚拟现实地理信息系统(Virtual Reality Geographic Information System，简称VRGIS)是虚拟现实与地理信息系统相结合的技术，是一种用于研究地球科学的，或以地球科学系统为对象的虚拟现实技术，也是近年来一个新兴的地理信息系统的研究分支。

However, it can only implement the limited operation to the spatial objects, cannot carry on transformation, index, interlink age and excavation to the spatial data, and hard integrate other information with combining map variable to set up and analysis new variable. Meanwhile, relational model in the traditional DBMS and the object- oriented modeling do not completely suit the spatial application domain. The relational model can handle topological relation well, but shows inabilities to that complicated level crossing the spatial region. Object-oriented model using software method based on the principle of the customer defined data type supports the abstract data type, especially spatial abstract data type, and possesses polymorphism and inheritances, and it can deal with topological and the layer relation, but hardly processes important continuous phenomenon in space.

GIS是当今操作有关空间信息的成熟工具和技术，但其只能对空间对象进行有限的操作，不能对空间数据进行变换、索引、链接和挖掘，难以集成其他信息来构建和分析新变量；而传统数据库管理模型中的关系模型和面向对象建模也不完全适合空间应用这一领域，关系模型能够较好地处理拓扑关系，但对表示横跨空间区域的复杂层次却无能为力；面向对象模型的软件方法支持抽象数据类型，特别是空间抽象数据类型，具有继承性和多态性，能够处理拓扑和层次关系，但难以处理空间中重要的连续性现象。

Senior technical leader of SGS plumbing lab, worked in TOTO and Saint Gobain before.）（Senior project manager in SGS GIS department, operated SASO, SONCAP project for many years.

王君梅：SGS卫浴实验室资深技术主管，曾就职于TOTO，Saint Gobain。；张伟军：SGS政府及公共机构服务部资深项目经理

Based on the modeling theory of the equivalent probability density error model(marked as "Tepdem") and the numerical algorithm,this paper provides an approach on how to ascertain a point location with the highest coordinates precision between both of the adjacent characteristic points on a generic curve accurately by use of the theory of function extremum as well as the iterative algorithm,and it also provides the method on how to obtain the least width of "Tepdem" exactly,from which,the explanation of geom...

基于等概率密度误差模型建模原理和数值算法，运用函数极值理论和迭代方法来求解平面一般曲线上两相邻特征点间位置精度最高的点，以精确确定误差模型的最小带宽，从理论上给出等概率密度误差模型的几何特征，从而进一步完善矢量GIS的位置不确定性理论。通过实例计算与可视化分析，验证了理论推导的正确性。

In this paper, the concept of ComGIS and the significances of implement ComGIS are discussed.

经过30多年的发展，GIS已逐渐渗透到各行各业，成为信息产业的重要组成部分。

Represents a typical example of a Company tied up to the territory, full of stock farms and slaughterhouses.

GIS代表的一个典型例子公司捆绑起来的领土，充分的股票农场和屠宰场。

Represents a typical example of a Company tied up to the territory, full of stock farms and slaughterhouses.

GIS代表一个典型由大量农场和屠宰场合并成公司的案例。

This paper, however, proposes a countyscope gravity model to present the smallscale population migrations, using separated resident areas as basic calculation units.

在GIS的支持下，提出构建县域人口迁移引力模型，选择县域内独立的居民区片为计算单元来评价乡镇的人口吸引潜力和人口最大可能迁移目的地分布。

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。