煤岩 meaning in Chinese
ingredient
Examples
- Classification of macrolithotype for bituminous coal
烟煤的宏观煤岩类型分类 - Supporting technology practice of soft coal and rock roadway
松软煤岩巷道支护技术实践 - Experimental study on the impact breaking of coal and rock
煤岩冲击破碎趋势的几何准则 - Method of preparing coal samples for the coal petrographic analysis
煤岩分析样品制备方法 - Application of controlled blasting in drivage of coal - rock drift
在半煤岩巷道掘进中的应用