煤岩类型通常作为煤层分层的划分单位，为肉眼观察时，按照同一变质程度煤的平均光泽强度所划分的类型。按平均光泽强度依次分为光亮煤、半亮煤、半暗煤和暗淡煤四类。
显微煤岩类型 microlithotype of coal ; microlithotype
双组分显微煤岩类型 bimaceral
显微煤岩类型测定方法 Method of determining microlithotype composition
显微煤岩类型分类 Classification of microlithotype
宏观煤岩类型 macrolithotype of coal
煤岩显微类型 microlithotype of coal
含煤岩系成因类型 genetic types of coal measures
含煤岩系古地理类型 palaeogeographic types of coal Ineasures
·2,447,543篇论文数据，部分数据来源于NoteExpress
提出了镜质组含量高的煤岩类型有较好的煤层气储集物性条件。
It is suggested that coal lithological types with high content vitrinites have better physical behavior conditions for coal seam gas accumulation.
煤层气井煤心和煤储层露头的煤岩类型系统测量是获取煤储层评价参数的关键环节。
The key link to obtain the evaluation parameters of coal reservoirs is the coal cores from coal-bed gas wells and the coal rock from coal reservoir outcrop.
煤系的层序组合是影响煤层气富集的主要因素之一，薄煤岩互层是层序组合的一种类型。
Succession formation of coal measures is one of the important factors that affect enrichment of coal bed methane.
应用推荐