lignitous coal

• 褐煤

lignitous coal的用法和样例：

例句

1. The methods of making solid coal sorbent and liquid gelsorbent from lignite are also discussed in this paper.
   列举了由褐煤制取固体煤质吸附剂和液体凝胶吸附剂的方法。
2. TheASTM rankings for bituminous coal, sub-bituminous coal, or lignite fit the spreader combustion process well.
   美中试验材料协会根据煤在燃烧时的性能把煤分为烟煤，次烟煤，褐煤几个等级。