rock coal 岩煤
rock-coal mass 煤岩体
rock-coal model 煤岩组合模型
burnt rock coal 烧变岩
soft rock coal mine 软岩矿井
soft rock coal roadway 软岩回采巷道
In the paper, the alternative characters of current electric conduction of rock-coal porous medium with gas are studied.
研究了煤岩多孔介质及其充瓦斯后的交流导电性。
He could sense the right place to hit so that the rock crust would cleave and reveal the coal, in the same way that a sculptor can sense exactly where to hammer a chisel into a stone.
他可以感觉到正确的敲击位置，这样岩石的外壳就会裂开显出煤矿，正如雕塑家可以精确知道在石头的什么位置而用凿子敲击一样。
Remains of Titanoboa cerrejonensis were found in a layer of rock at the cerrejon Coal mine, one of the largest open-pit mines in the world.
Titanoboa cerrejonensis(蛇的名字)的遗骸是在cerrejon煤矿- - -世界上最大的露天煤矿之一的岩层中被发现的。
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