文章摘要信息 关键词 ： 煤结构；红外光谱；XRD；低阶煤；生物甲烷 [gap=743]Keywords : coal structure；infrared spectroscopy；X-ray diffraction；low-rank coal；biogenic methane
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低级煤 dant; grizzle; inferior coal; lean coal; low-grade coal; low-rank coal; poor grade coal 低级氢解 low grade hydrogenolysis .
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low rank coal 低煤阶煤 ; 低煤化度煤 ; 低阶煤 ; 低煤级煤
low-rank coal reservoir 低煤阶煤储集层
low rank coal reservoirs 低煤级煤储层
low-rank coal in India 印度劣质煤
low-rank coal-bed methane 低煤阶煤层气
low-rank coal-bed methane reservoir 低煤阶煤层气藏
low rank bituminous coal 低级无烟煤
low rank soft coal 低阶烟煤
From the results of coal sample upgrading basic experiments, low-rank coal upgrading infection factors and basic design datum were obtained.
根据试验煤样的提质基础实验结果,分析出低阶煤提质影响因素及确立基础设计数据。
参考来源 - 管式气流干燥器提质低阶煤理论与技术的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Enrichment and accumulation of coalbed methane in low rank coal have their own unique characteristics.
低煤阶煤层气富集成藏具有自身独特的特点。
The reservoirs of the medium rank coal characterize low gas content, low gas saturation, good permeability, and high energy in Hedong area of Shanxi, China.
中国山西河东地区中阶煤储层的含气量比较低、含气饱和度低，而储层渗透性好，储层能量比较大；
The resources of low rank coal in the world have introduced in this paper.
本文介绍了世界低煤阶煤炭资源及其分类。
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