城市给水排水工程

Ben shu fen shang,Xia liang pian.Shang pian chu le chan shu chuan tong de gong cheng yuan li he xi tong xing shi wai,Zhong dian jie shao zhei xie ling yu xin de gong yi,Gong cheng jie gou xing shi,Xin she bei he xin cai liao deng.Xia pian zhong de cheng shi pai shui gong cheng gai lun zhu yao chan shu cheng shi pai shui gong cheng de ren wu yu xi tong zu cheng,Pai shui xi tong de ti zhi ji qi xuan ze,Pai shui xi tong de gui hua she ji yuan ze he ren wu