基本解释[能源科學技術]中等煤炭中煤英汉例句雙語例句The most reactive coal is in the middling coal-bank;含灰量低的中等變質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.所用煤種包括高硫原煤、低硫原煤、中煤。middling coal更多例句词组短语短語middling coal bin [鑛業]中煤倉middling and small coal boiler 中小型燃煤鍋爐middling coal更多词组专业释义能源科學技術中等煤炭中煤