Quan qiu di cheng ben hang kong

Ben shu hui bian le guo wai xue zhe you guan di cheng ben hang kong yan jiu de wen zhang.Zhei xie wen zhang cong geng guang kuo de shi jiao tan tao hang kong qu yu jie shao,Di cheng ben hang kong gong si zai ge zi shi chang li de bei jing yu fa zhan,Zhei xie shi chang de fa zhan qu shi he zui jia an li,Dui guo nei xiang guan ling yu yan jiu zhe ju you can kao jia zhi yu jie jian yi yi.