水带护桥 chafing block ; hose protector ; hose jumper ; hose ramp

保护桥 [机] protection bridge

高架桥护墙 viaduct parapet wall

水袋护桥 hose protector

桥梁养护 maintenance of the bridge

桥梁护轨 guard rall of bridge

桥梁护木 guard timber of bridge

变电桥保护 Variable bridge principle protection

桥隧养护 maintenance of bridge and tunnel