单词coalification
n.: 【矿】煤化(作用)
网络: 煤化作用；煤化酌；成煤作用
【矿物】煤化(作用)
碳化作用
Burial and increase in temperature bring about physical and chemical changes called coalification.
埋藏和温度增高导致的物理变化和化学变化称为煤化作用。
The results shown that there are some good rules for the characterization of free radicals of coals in coalification .
结果表明，煤自由基特性在煤化过程中的规律性较好。
when the stress (strain) is the same, the higher the coalification degree, the less the permeability coefficient;
当外加应力相同时，煤化程度越高，渗透系数越小；
Effect of coalification rank on CO absorption by coal seams
煤的变质程度与煤层吸附CO影响的实验研究