英语词汇downcomers怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	downcomers
释义	downcomer['daun,kʌmə] n. (蒸汽锅炉、高炉等的)下水管，下降管，落水管 (洗脸池、厕所贮水箱等的)下水管【冶金学】降气管，下气管
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