PC(prestressed concrete) rail beam  预应力钢筋混凝土轨道梁

PC prestressed concrete  预应力混凝土

PC rail beam  PC轨道梁

PC rail beam edge  PC轨道梁边缘

prestressed concrete PC  预应力混凝土

bond-retarded prestressed concrete beam  缓粘结预应力混凝土梁

development of prestressed concrete beam bridge  预应力混凝土梁桥

existing prestressed concrete beam  预应力混凝土梁

full prestressed concrete beam  全预应力梁; 全预应力混凝土梁

Full-prestressed Concrete Beam  全预应力梁

precast prestressed concrete beam  预制预应力混凝土梁

prefabricated prestressed concrete beam  装配式预制钢筋混凝土梁

Prestressed Concrete Beam  预应力混凝土梁; 预应力梁; 钢筋混凝土梁

Prestressed Concrete Beam Bridge  预应力混凝土梁桥; 混凝土梁桥

prestressed concrete beam structure design  预应力混凝土桥结构设计

prestressed concrete rail fastening  预应力混凝土轨条扣件

retard-bonded partially prestressed concrete beam  缓粘结混合配筋预应力混凝土梁

retard-bonded partially prestressed concrete beam with mixed reinforcement  缓粘结混合配筋预应力混凝土梁

UNBONDED PRESTRESSED CONCRETE BEAM  无粘结预应力混凝土梁

PC beam  PC梁