烟煤 meaning in English

bituminous coal; soft coal; pit coal; bitumite; black coal; boghead; coaboghead

Of all the workers in the country bituminous miners probably had best grounds for discontent .
在全国所有的工人中，可能烟煤矿工不满的理由最充分。
Determination of plastometric indices of bituminous coal
烟煤胶质层指数测定方法
Separation of vitrinite group in bituminous coal
烟煤的镜质组密度离心分离方法
Hard coal lignite , overburden , limestone , ash slag
烟煤褐煤剥离物石灰石灰渣矿渣
Classification of macrolithotype for bituminous coal
烟煤的宏观煤岩类型分类

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