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  • Web沉管隧道是德雷赫特河
1.
沉管隧道是德雷赫特河
迄今在荷兰修建的最大沉管隧道是德雷赫特河Drecht)隧道(图5),某外轮廓为48.8×8.08m,由4个双车道管孔和两个服务巷道组 …
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