Unbond prestressed concrete wide flat beam-slab structure is a new type of floor system.

无粘结预应力混凝土扁梁-平板结构体系是一种新型的楼盖体系。

youdao

Unbond prestressed concrete wide flat beam-slab structure is a new type of floor system.

无粘结预应力混凝土扁梁-平板结构体系是一种新型的楼盖体系。

youdao