Urban DNA城市DNAurbanadj.城市的；都市的urban infrastructure facilities城市基础设施Urban fringe area of metropolis特大城市城乡结合部Urban forest and housing system城市林房系统urban land Use general planning城市土地利用总体规划urban electromagnetic radiation城市电磁辐射URBAN GROWTH AND HOUSING SUPPLYurbanization in the countryside湖南省Urban rural planning management城乡规划管理urban housing vulnerable groups城镇弱势群体urbanization of migrant workers农民工市民化