underdrainage

underdrainage

1. highway underdrainage

公路地下排水

2. ditch of underdrainage

地下排水沟

3. underdrainage system

地下排水系统

4. Keywords underdrainage;metal reinforcement;double wall screw ripple pipe;melt compounding;

埋地排水;金属增强;螺旋双壁波纹管材;熔融复合;

5. close underdrainage

封闭式渗沟

6. Process Design of Underdrainage Treatment of Zhang Ji Coal Mine

张集矿井下排水处理工艺设计

7. tile underdrainage

瓦管地下排水