Topography 50 Download, vector

Topography 50 Download, vector is open data (CC0) and contains, among other things, buildings, ground battles, roads, hydrographics and place name texts.地形50下载数据集（Topography 50 Download）为采用CC0协议开源的矢量数据（vector），其内容涵盖建筑物、地面地貌要素、道路、水文要素（hydrographics）以及地名文本等。