NASA不是美国航天局吗？这难道真是出自他们之手的GIS空间与地理探测软件？不过从软件结构和规范上看，确实做的很好，不得不相信这是出自高人之手，对此感兴趣的可不要错过哦！-NASA NASA is not it? This really made ​ ​ by them of GIS spatial and geographic exploration software? But from the software structure and normative point