1)curb,导流沟2)persion open channel,导流明沟3)blind ditch persion,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
英汉例句
When water to be drained and dropping head o f foundation delve are small, filter persion, duct persion, well draining an d blind ditch persion can be adopted.
