常見例句雙語例句In recent years, round steel bar, deformed steel bar and helical rib steel wire for prestressed concrete are new kinds of high strength prestressed reinforcement.預應力混凝土用光圓鋼棒、異形鋼棒及螺旋肋鋼絲就是近年來開發(fā)的高強預應力鋼筋新品種。 返回 round concrete bar