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
- product kernel
- product Kinetics
- product liability
- product liability insurance
- product library
- product life cycle
- product lifecycle assessment
- product life-cycle management
- product lifecycle management
- product lifecycle management, PLM
- product lifecycle management，PLM
- product life cycle theory
- product limit estimator
- product-limit estimator
- product line architecture
- Product line optimization
- Product Line Pricing
- product log function
- product management
- product manifold
- product mapping
- Product/Market Evolution Portfolio Matrix
- product matrix
- product measurable set
- product measurable space