英语词汇“backwater valve”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	backwater valve
释义	WordReference Random House Unabridged Dictionary of American English © 2024 back′water valve′, Building, Hydraulicsa valve for preventing flowing liquid, as sewage, from reversing its direction. Also called backflow valve.
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