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预应力混凝土梁
bridg.constr. prestressed concrete beam
proj.manag. prestressed concrete girder
railw. prestressed concrete girder beam
预应力混凝土T梁
bridg.constr. prestressed concrete T-beam
预应力 混 凝土梁: 73 phrases in 3 subjects
Bridge construction12
Rail transport1
Technology60