lower bituminous coal
常见例句
- The results show that at lower burn-off, the high content of Datong bituminous coal is favorable for preparing activated carbons with high iodine value and methylene blue value.
試騐結果表明,大同菸煤配比較高時,有利於在低燒失率下制備高碘值、高亞甲藍值的活性炭; 返回 lower bituminous coal