经济学

• jing-jin-ji megalopolis

• beijing-tianjin-hebei metropolitan area

• jing-jin-ji metropolitan aeras

• the riegon of city

环境科学技术

• beijing-tianjin-hebei metropolis area

土木建筑工程

• beijing-tianjin-hebei metropolitan region

地球科学

• beijing-tianjin-hebei metropolitan region