表1 煤炭分类总表
类别
符号
数码
分 类 指 标
VR,%
PM,%
无烟煤
WY
01,02,03
<10.0
烟 煤
YM
11,12,13,14,15,1621,22,23,24,25,2631,32,33,34,35,3641,42,43,44,45,46
>10.0
褐 煤
HM
51,52
>37.0*
<50**
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