地形底图
- 网络Topographic map;topograplic base map
地形底图-
地质图是将各种地质体的界限、特征、产状、地质构造以及有意义的地质现象按一定法则缩绘在地形底图上的图件，它是展示地质成果的手段，是地质勘探的依据资料。
Geological maps is shortened of a variety of geological bodies , characteristics , occurrence and geological structure and geological phenomena with certain rules in the topographic base map , it is a means of displaying the research results , it is the basis information of geological exploration .