上、下 – phrases

Terms for subject Hydroelectric power stations containing 上、下 | all forms | in specified order only

Chinese	English
上上下下	up-and-down
上下水道工程	water-supply and sewerage works
上下游动	wander up and down
上下游水位差	level difference between headwater and tailwater
上下运动	up-and-down movement
自上而下分段灌浆	descending stage grouting
自上而下开挖	top-down excavation
自下而上分段灌浆	ascending stage grouting
自下而上填筑施工	filled from the bottom up
船闸上下游水位差	lock lift