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
- underground loading equipment
- underground logistics system planning
- underground magnetic resonance imaging system
- underground material transpoter
- underground mechanized scaler
- underground mine development
- underground mine development choice
- underground mined-out areas
- underground mine emergency refuge system
- underground mine intelligent dispatch
- underground mining construction schedule planning
- underground mining machinery
- underground mining methods
- underground mining schedule planning
- underground multifunctional vehicle
- underground municipal facilities
- underground municipal facilities planning
- underground natural gas storage
- underground nuclear explosion
- underground nuclear test
- underground oil and water movement rule
- underground oil chamber
- underground oil depot survey
- underground oil storage comes from salt cavity
- underground oil storage facility