英语词汇“filter bed”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	filter bed
释义	WordReference Random House Unabridged Dictionary of American English © 2024 fil′ter bed′, Civil Engineeringa pond or tank having a false bottom covered with sand and serving to filter river or pond waters. 1870–75 Collins Concise English Dictionary © HarperCollins Publishers:: filter bed n a layer of sand or gravel in a tank or reservoir through which a liquid is passed so as to purify it
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