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
- longitudinal plasma wave
- longitudinal pressure
- longitudinal profile of metro line
- longitudinal projection
- longitudinal propagation
- longitudinal relaxation
- longitudinal relaxation time
- longitudinal research on education
- longitudinal resolution
- longitudinal resolution of ultrasound imaging
- longitudinal resonance
- longitudinal rolling
- longitudinal scan
- longitudinal seam submerged-arc welded steel pipe
- longitudinal section
- Longitudinal single case
- longitudinal spherical aberration
- longitudinal (spin-lattice) relaxation time
- longitudinal [spin-lattice] relaxation time
- longitudinal spin lattice relaxation time
- longitudinal spin-lattice relaxation time
- longitudinal strength
- longitudinal study
- longitudinal/transverse resolution of ultrasound imaging
- longitudinal turbulence