基本解释[能源科学技术]中等煤炭中煤英汉例句双语例句The most reactive coal is in the middling coal-bank;含灰量低的中等变质程度的煤氧化活性最高；The coals used included high-sulfur raw-coal, low-sulfur raw-coal and middling coal.所用煤种包括高硫原煤、低硫原煤、中煤。middling coal更多例句词组短语短语middling coal bin [矿业]中煤仓middling and small coal boiler 中小型燃煤锅炉middling coal更多词组专业释义能源科学技术中等煤炭中煤