• It may avoid stopping transportation and polluting city environment to have excavation in the open replaced by shallow-concealed excavation for large scale underground cable tunnel construction.

    采用浅埋暗挖法施工地下电缆隧道取代明沟开挖法,避免阻断交通污染城市环境

    youdao

  • It may avoid stopping transportation and polluting city environment to have excavation in the open replaced by shallow-concealed excavation for large scale underground cable tunnel construction.

    采用浅埋暗挖法施工地下电缆隧道取代明沟开挖法,避免阻断交通污染城市环境

    youdao

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