英语词汇“step aeration”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	step aeration
释义	step aeration step aeration [′step e‚rā·shən] (civil engineering) An activated sludge process in which the settled sewage is introduced into the aeration tank at more than one point.
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