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3DGIS的基础，也是矿山3D GIS研究的重点和难点。
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3DGIS的基础，也是矿山3D GIS研究的重点和难点。
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