1)curb,导流沟2)diversion open channel,导流明沟3)blind ditch diversion,盲沟导流4)canal,导沟(玻);流槽5)mud avalanche ditch,泥石流排导沟6)guide trench,导沟
用法和例句
When water to be drained and dropping head o f foundation delve are small, filter diversion, duct diversion, well draining an d blind ditch diversion can be adopted.