College of Earth Sciences;
Jilin University;
Changchun 130026;
China;
College of Computer Science and Technology;
Jilin University;
Changchun 130012;
China;
College of Computer;
Northeast Normal University;
Changchun 130024;
China;
成分; 组件式地理信息系统; 地理信息系统开发; 地理信息系统软件;