steel cap钢顶梁steeln.钢铁；钢制品；钢铁般的性质vt.使坚强；使 ... 硬如钢；使下定决心adj.钢的；坚强的steel-pipe-concrete arch bridge钢管混凝土拱桥Steel/PU/Steel Sandwich Plate钢／聚氨酯／钢复合板材steel-pipe concrete arched bridge钢管混凝土拱桥steel structure with inclined brace斜腿刚构steel - fiber reinforced concrete钢纤维混凝土Steel castings for welded structure焊接结构用钢铸件steel-tube concrete arch-bridge钢管混凝土拱桥Steel galvanised and painted bronze钢镀铜着色steel-concrete hybrid arch bridge钢-混凝土混合拱桥steel mesh trellis section concrete钢网格构型钢混凝土