USAPhotoMaps

航拍照片和地形图数据，从微软的免费msrmaps.com网站下载，节省您的硬盘驱动器上，并创建航拍照片/地形图与GPS的精度。

downloads aerial photo and topo map data from Microsoft's free msrmaps.com website, saves it on your hard drive, and creates aerial photo/topo maps with GPS accuracy.