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
- multi wire proportional chamber
- multi-wire proportional chamber
- multiwire proportional chamber
- multi-wire proportional chamber, MWPC
- multiwire proportional chambers
- multiwire proportional chambers, MWPC
- multi-wire proportional counter
- multiwire proportional counter
- multi-year mean sea level
- multi-year training plan
- multi-zeta value
- Mulungushi Declaration
- mu-mapping
- Mumbai
- Mumbai consensus
- Mumbles on Poetry
- mu-measurable function
- mume, bamboo, and Two Birds
- Mu Men
- Mumen Temple
- mu-meson
- mu-metal
- mume twigs
- Mumford
- Mumford,David Bryant