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
- Ruth Almog
- Ruth Benedict
- Ruth Bernhard
- ruthenium
- ruthenocene
- Rutherford
- rutherford
- Rutherford [alpha-particle scattering] experiment
- Rutherford alpha-particle scattering experiment
- Rutherford atomic model
- Rutherford backscattering
- Rutherford backscattering spectroscopy
- Rutherford backscattering spectroscopy (RBS)
- Rutherford backscattering spectroscopy, RBS
- Rutherford B.Hayes
- Rutherford-Bohr atomic model
- Rutherford crater
- Rutherford cross-section
- Rutherford, Ernest
- Rutherford experiment
- Rutherford gold foil experiment
- rutherfordine
- rutherfordium
- Rutherford model
- Rutherford scattering