A.鋼筋束 B.冷拉鋼絲 C.鋼絞線 D.冷拔低碳鋼絲
A.25×1.55 B.35×1.45 C.45×1.35 D.55×1.25
A.0.6mm/mB.1.2mm/mC.1.8m/mD.2.4m/m