GB/T 20257.1-2017国家基本比例尺地图图式第1部分:1:5001:10001:2000地形图图式国家标准
英文:Cartographic symbols for national fundamental scale maps—Part 1:Specifications for cartographic symbols 1︰500 1︰1 000...
英文:Cartographic symbols for national fundamental scale maps—Part 1:Specifications for cartographic symbols 1︰500 1︰1 000...