prestressed frame beam 预应力框架梁

prestressed frame column 预应力框架柱

prestressed frame structure 预应力框架结构

partial prestressed frame beam 部分预应力框架梁

non adhesive prestressed frame 无粘结预应力框架

prestressed concrete frame 预应力混凝土框架

Prestressed Concrete Frame Structure 预应力混凝土框架结构

prestressed continuous rigid frame bridge 预应力连续刚构桥

prestressed anchor cable frame 预应力锚索框架