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
- coating method
- coating of precious metal
- coating of sizing film
- coating preservation
- coating printing
- coating processing line
- coating protection
- coating quality inspection
- coating repair
- Coating Technology
- coating thickness meter
- coatom
- coat protein
- coat room
- Coats’ disease
- Coatzacoalcos
- COAX
- coaxal
- coaxial
- coaxial cable
- coaxial circles
- coaxial extrusion
- coaxiality
- coaxiality measurement
- coaxial line