clarain
- n.亮煤
clarain-
Results display : transitional span and microporous pore interior of vitrain and clarain growth relatively . Whereas gas adhere to microporous pore . So vitrain and clarain have more adsorption space .
结果显示：镜煤、亮煤内部过渡孔和微孔相对较发育，瓦斯主要吸附在煤中的微孔中，故镜煤、亮煤的吸附空间较大。
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The Datong Bituminous coal was divided into clarain coal ( C ) and dull coal ( D ) according to their lithotypes to understand its fragmentation under different bed temperature , resident time , and vibrating frequency and amplitude .
根据岩相的不同，把大同煤分为亮煤（C）和暗煤（D），以了解床温、停留时间和振动强度对碎裂特性的影响。