1) low metamorphic lignitous coal
低变质褐煤
1.
As a result, reasonable thickness of top coal for 30 # seam, a low metamorphic lignitous coal seam in Dayan mining area, was given.
在大量实验室相似材料模拟试验及现场实践的基础上，探讨了低变质褐煤进行放顶煤开采时顶煤运移的特殊规律，给出了大雁矿区综放开采顶煤的运移规律和合理的分层厚度。
2) low metamorphic coals
低变质煤
1.
The low metamorphic coals are abundant in North Shannxi.
陕北地区低变质煤资源丰富,产量较大。
3) low-middle metamorphic coal
中低变质煤
4) subcannel coal
低变质烛煤
5) low rank bituminous
低变质烟煤
1.
Wettability of macerals from low rank bituminous
低变质烟煤有机显微煤岩组分的润湿性
6) woody brown coal
木质褐煤
1.
The studying of making formed activated carbon from woody brown coal, using coal tar and industrial waste liquids of paper pulp, sugar molasses and beer as adhesive, shows that the type and amount of adhesive ef- fect significantly on the quality of formed activated carbon.
以木质褐煤为原料,分别以煤焦油、纸浆废液、糖蜜废液、啤酒废液为粘结剂,制备定型活性炭的研究表明,粘结剂的种类和用量对活性炭的质量有较大影响。
补充资料：低都儿低
1.低而又低，很低。
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