unbonded prestressed concrete

无粘结预应力现浇砼,con... ... ) unbonded prestressed concrete 无粘结预应力砼 ) prestressed moulding concrete 预应力现浇砼 ...

后张法... ... ) Post-Tensioned Concrete Structure 后张预应力混凝土结构 ) unbonded prestressed concrete 无粘结预应力混凝土 ...