The controlled crucial works for this contract section is the construction for the prestressed concrete continuous combined box beam.
本合同段控制性关键工程是预应力砼连续组合箱梁的施工。
The controlled crucial works for this contract section is the construction for the prestressed concrete continuous combined box beam.
本合同段控制性关键工程是预应力砼连续组合箱梁的施工。
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