low active anthracites 低活性无烟煤
active anthracites 活性无烟煤
low activity anthracites 低活性无烟煤
high metamorphosed anthracites 高变质程度无烟煤
In this artical, fractal dimensions of various rank coal(from lignite to anthracite)and coal-coke are determinated by using gas adsorption data,and correlations between them are studied.
本文利用气体吸附数据确定了各种煤阶煤（从褐煤到无烟煤）和煤焦气化反应过程中微孔表面的分形维数及其变化规律。
参考来源 - 煤微孔表面的分形维数及其变化规律的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
同义词： anthracite coal hard coal
以上来源于: WordNet
N-UNCOUNT Anthracite is a type of very hard coal that burns slowly, producing a lot of heat and very little smoke. 无烟煤
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