国家基本地形图
national basic topography maps
城市基础比例尺地形图
city basic scale relief map
大比例尺地形图
Large-scale Topographic Maps
large scale topographic map
large scale topographical map
Large - scale map
Large-scale Topographic Map
large scale geographic map
大比例尺地形测图
Large Scale Topographic Surveying and Mapping
大比例地形图
Large-scaled Topographical Maps