drainage hole meaning in English
放泄孔
疏水孔
泄水孔排水孔泄水孔
Examples
- Tapered drilling method for drainage holes in crooscut
石门排放钻孔锥体施工方法 - The improvement of sealling method inside gas drainage hole
瓦斯抽放钻孔封孔方法的改进 - Eight drainage holes ensure effective and safe drain
8个引流孔，保证引流量，有效更安全。 - Study on the composite element method for modeling drainage holes
模拟排水孔的复合单元法研究 - Air element methad for modeling drainage holes in seepage analysis
渗流分析中排水孔模拟的空气单元法