for drainage meaning in English
用于排放
Examples
- It is important for drainage work since checks can be made on its effectiveness before planting .
排水工作很重要，因为在栽植前就可对其效果加以控制。 - Tapered drilling method for drainage holes in crooscut
石门排放钻孔锥体施工方法 - Land resumption for drainage works in shui lau hang
水流坑收地进行排水改善工程 - Land resumption for drainage improvement works
政府收地进行排水系统改善工程 - Catheters for drainage use in the stomach and esophagus
胃和食管用引流导管