石拱桥加固
stone arch bridge strengthening
加固旧危拱桥
strengthening of old arch bridge
大跨连拱拱桥
Long-multi-span Arch Bridge
加固拱肋法
arch rib reinforcement method
套拱加固
reinforcement with arch surround
Reinforcemert with arch surround
旧桥加固
existing bridge strengthening
old bridge strengthening
the strengthening of old bridges
Reinforcement of old bridge
ridge strengthening
危桥加固
strengthening of dangerous bridges
P2O5和CaF2固－固加热法
solid-solid-heated method of P2O5 and CaF2
H型拱桥式接骨板
H type Arch bridge shaped plate
大跨度钢拱桥
Long-span steel arch bridges
long span steel arch bridge
大跨度钢管混凝土拱桥
long span CFST arch bridge
Long-span concrete-filled steel tube arch bridge
大跨度钢筋混凝土箱形拱桥
long-span concrete arch bridge