大桥病害
geological of bridge disaster
病害病因
disease and disease cause
钢筋混凝土旧桥
old reinforced concrete bridge
旧病复发
suffered from a recurrence of her old sickness
旧桥拆除
demolition of old bridges
旧桥承载力
Bearing Strength to Existing Bridge
bearing capacity of old bridge
load bearing capacity of old bridge
旧桥改建
re-building of old bridge
旧桥改造
reconstruction of old bridge
Upgrading of existing bridge
remake old bridge
旧桥加固
existing bridge strengthening
old bridge strengthening
the strengthening of old bridges
ridge strengthening
Reinforcement of old bridge
旧桥检算系数
old bridge check coefficient
旧桥评定
Evaluation of existing bridge