water drainage and gas production equipment  排采设备

Water Drainage and Gas Recovery  排水采气

air exhaust and water drainage  排空气与放水

amount of salt in surface drainage water and irrig  农田排水含盐量

blue gas water gas  水煤气

combination of mine drainage and water supply  排供结合

combined water drainage and diversion  联合引调

design of water and drainage  给排水设计

detached tool about gas and water  气水分离器

distribution of gas and water  气水分布; 气水分布规律

Diving and Replacement of Water and Gas among Coal  水气驱替

Drinking water and water source  饮用水及水源水

feed water and drainage  给水排水

feed water and drainage pipeline  给水排水管道

Gas and water discrimination  气水识别

Gas and Water Distributing  气水分布

Gas and Water Interface  气水界面

gas and water layer identification  气水层识别

Gas and Water Layers Identification  气水层识别