这是中国地图的shapefile格式文件，可以用于在argis或者udig等gis组件中打开中国地图-Automatic generated: "This is the map of the shapefile format, can be used in argis or udig gis components such as a map of China Open"

jts是GIS系统空间分析必需组件，这里提供的是其1.6开源版本，欢迎下载！-jts is a required component of GIS spatial analysis, here is its 1.6 open source version, welcome to download!