英语词汇“back-draft damper”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	back-draft damper
释义	back-draft damper back-draft damper [′bak ‚draft ′dam·pər] (mechanical engineering) A damper with blades actuated by gravity, permitting air to pass through them in one direction only. back-draft damper A damper, 1 having blades which are actuated by gravity, permitting air to pass through them in one direction only.
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