利用超声成像技术辅助判定覆岩破坏钻孔的导水裂缝带高度

利用超声成像技术辅助判定覆岩破坏钻孔的导水裂缝带高度的英文翻译

基本释义

• The height of leaking crevice belt in wrecked-rock over coal seam determined supplementally by the technique of ultrasonic imagery in borehole