深部煤层 meaning in Chinese
deecoal
Examples
- Three dimensional seismic exploration of profound coal seam in huozhou mine area
霍州矿区深部煤层的三维地震勘探 - Analysis of gas emission phenomena after rock burst in deep coal seam and prevention
深部煤层冲击地压后瓦斯涌出现象浅析及其防治
deecoal