...”的类似商机 ... 曲线隧道 curved tunnel 明洞 open tunnel;opencut tunnel;tunnel without cover;gallery 隧道勘测 tunnel survey ...
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cut-type tunnel without cover 路堑式明洞
arch tunnel without cover 拱形明洞
part cut-type tunnel without cover 半路堑式明洞
anti-skid-type tunnel without cover 抗滑明洞
structure tunnel without cover 拱形明洞
ingignment tunnel without cover 拱形明洞
zero-skid-type tunnel without cover 抗滑明洞
psculptures cut-type tunnel without cover 半路堑式明洞
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