1) rock and coal perforater
石岩煤层打眼机
3) organic petrology (coal petrology)
有机岩石学(煤岩学)
4) trepanning machine
打眼机
5) coal measures rocks
煤系岩石
1.
Experimental investigation of the bursting potential in coal measures rocks;
煤系岩石冲击倾向性试验研究
6) coal-series strata
煤岩层
1.
Aim The study on the genetic types of abnormal weathering of deep-seated coal-series strata in Weibei Permo-Carboniferous(C-P) coalfield of Shaanxi Province is of great practical significance to guide the effective production of coal mines.
目的 探讨渭北C-P煤田深部煤岩层异常风化的成因类型。
补充资料：石岩
1.岩石。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条