【Key words】 main and assistant pulse airflow drier； low-rank coal； upgrading； briquette mechanical intensity； briquette waterproofness；
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low rank coal低煤级煤 Adsorption experiments of low rank coal under equilibrium moistures;低煤级煤平衡水条件下的吸附实验 ..
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low-rank coal 低阶煤 ; 低级煤
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
Generally quartz veins are not developed in measures with low rank coal.
低变质煤煤系石英脉一般不发育。
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。
Primary factors influencing the exploration of coal - bed gas in low rank coal basins are analyzed.
分析了影响低阶煤盆地煤层气勘探的主控因素。
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