lower bituminous coal
常見例句
- 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.
試驗結(jié)果表明，大同煙煤配比較高時，有利于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