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
- shadow generation
- shadowgraph
- shadowgraphy
- Shadow Health Wand
- shadow image
- shadowing
- shadowing fading
- shadowing property
- shadow internet
- shadowless photography
- shadow map
- shadow mask
- shadow matter
- shadow moiré
- shadow photography
- shadow photometer
- Shadow-Planet
- shadow play
- shadow play music
- shadow play stage at Qianpanggou Village
- shadow play stage of the Guandi Temple in Mashuling Village
- shadow play theatre of Taoshugou Village, Xiaoyi City
- shadow price
- Shadow prices in project evaluation and review
- shadow scattering