Shi W Z,Leung J.Integrated GIS and expert system framework for redistricting[J].International Journal of Aerospace Survey and Earth Sciences,1998(2):99是什么意思_Shi W Z,Leung J.Integrated GIS and expert system framework for redistricting[J].International Journal of Aerospace Survey and Earth Sciences,1998(2):99在线翻译_英语_读音_用法_例句