工学 空间数据模型 释 spatial data model 空间数据模型 地理信息系统（GIS）中空间数据组织的概念和方法。反映现实世界中空间实体及其相互之间的联系，是描述GIS空间数据组织和进行空间数据库设计的理论基础。
数据库 数据库理论 释文 spatial data model 空间数据模型
- earnings per share method
- Earnshaw theorem
- ear ossicle
- earphone
- earphone for speech communications
- earpiece
- earplugs
- ear preparations
- ear protector
- ear rate
- earring
- earshot
- ear swell ear block
- ear tag
- Earth
- earth
- earth anchor
- Earth and Planetary Science Letters
- earth and rockfill dam
- earth and rock filling of railway
- earth-approaching asteroid
- earth-approaching comet
- earth-approaching object
- Earth Art
- earth atmosphere