three-dimensional spatial data model 维空间数据模型
three-dimensional flying data model 三维飞行数据模型
three dimensional urban model data 三维城市模型数据
Three-dimensional data model of geology in mine is the foundation of mining 3D GIS, and also the keystone and difficulty in the studies of GIS.
矿山地质三维数据模型是实现矿山3D GIS的基础，也是矿山3D GIS研究的重点和难点。
DESIGN: a single sample study taking the data of L4 5 three dimensional infinite element model as object of research.
设计：以脊柱l4 ~ 5节段三维模型的相关数据为研究对象的单一样本研究。
Based on the study of designing pattern of multi-dimensional data model, three designation methods are pointed out.
研究了多维数据模型的设计模式，给出了三种主要的设计方法。
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