1) metamorphism characteristics of coal
煤变质特征
3) coal quality character
煤质特征
1.
The coal quality characters and reasonable utilization route of Yanzhou mining area were analyzed and discussed.
介绍兖州矿区煤系、煤层及矿区生产建设情况，着重论述了矿区煤质特征，分析了矿区煤的合理利用途径。
4) coal characteristics
煤质特征
1.
Analysis on the coal characteristics of Mayidong mine field;
马依东井田煤质特征浅析
2.
The coal characteristics analysis of main coal seam of Mayidongyi mine field in Pan county Guizhou Province
贵州盘县马依东一井田主要可采煤层煤质特征分析
5) coal character
煤质特征
1.
The preliminary study on coal character and changing rules in Xingfu Mining Area;
浅析幸福井田煤质特征及其变化规律
6) coal quality characteristics
煤质特征
1.
In this paper,coal quality characteristics and correspondence product variety in Binchang mine area are analyzed,significance and method of raw coal cleaning and preparation are introduced,market prospect of competitive coal and economic benefit are described,to ensure the maximum coal resource benefit.
针对彬长矿区的煤质特征和应形成的产品情况进行分析,阐述了原煤洗选加工的意义及方法的确定,并对其精品煤的市场前景、经济效益进行了阐述,确保实现煤炭资源效益最大化。
2.
The coal quality characteristics indicated the coal is medium ash,extra-low volatile matter,medium high fixed carbon,medium high sulfur,extra-low phosphorus and medium heat value anthracite III,can be used to power generation and fuel.
煤质特征表明该煤层为中灰分、特低挥发份、中高固定碳、中高硫、特低磷、中热值的三号无烟煤,可作动力煤和燃料煤使用。
补充资料：煤的变质作用(见成煤过程)
煤的变质作用(见成煤过程)
metamorphism of coal
mel由玩anzhi zuoyong煤的变质作用(metamorPhism。f coal)‘见成煤过程。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条