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
- rational division algebra
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- rational economic man
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- rational element
- rational-emotive-behavioral therapy
- rational equation
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- rational equivalence class
- rational equivalence ring
- rational expectation equilibrium of complete revelation
- rational expectation equilibrium，REE
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- rational fraction