About Huang Jixin
About 蘭州市城市建設設計院,甘粛蘭州,730050
About Chengshi Dao Qiao yu Fanghong
About nodal point
About orifice
About timbering(mine)
About geology(geological feature)
About rock
About road construction
About tunnelling work
About carriageway
About construction method
About city
About national highway
About span
About 建設プロジェクト
About Junneling engineering in general
About ループ
About トンネル
About スパン
About 設計