long-span prestressed beam string pipe
Prestressed Beam String Structures
prestressed string beam
external prestressed beam
externally prestressed beam
high strength prestressed pipe pile
large non-prestressed beam and slab member
partially-prestressed beam
precast prestressed beam
prestressed beam adjusting technique
U-shaped prestressed pipe
arch beam string structure
Beam String Structure
张弦梁
张弦式桁架
空间张弦结构
弦支梁
张弦结构
张弦梁结构
索－梁结构