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
- plant desiccation tolerance
- plant detoxification to pollutant
- plant diffusion coefficiency
- plant disease
- plant disease control (management)
- plant disease mechanism
- Plant disease physical control
- plant disease prevalent
- plant disease resistance
- plant diseases and insect pests control
- plant diseases and insect pests prediction model of agriculture
- plant domestication
- plant dominance
- plant dormancy
- plant drought tolerance
- plant dyeing
- plant ecology
- plant ecophysiology of temperature
- planted forest
- planted forest resources of China
- planted plane tree
- planted tree
- plant electrical control system
- plant embryology
- plant epidermis