顶板岩层 meaning in Chinese
roof strata
top covers
top rock
Examples
- Control design of roof rocks for gob - side entry
沿空留巷顶板岩层控制设计 - Study on the zone with rich water of the roof rock of 3rd coal seam in xinglongzhuang mine
兴隆庄煤矿3煤顶板岩层富水性分区 - Research on rationally arranging position of horizontal boreholes in roof rock stratum
顶板岩层水平长钻孔合理布孔层位的研究 - The development and application of new - type detector of roadway roof strata structure
新型巷道顶板岩层结构探测仪的研制和应用 - Therefore , the abnormal strata behavior happened in the advance entry is the result of common action of 3 ( superscript # ) and 2 ( superscript # ) roofs
1303综放工作面超前平巷发生的奇异压力现象是3 (上标# )顶板和2 (上标# )顶板岩层共同来压作用的结果。