英语词汇“pressure-vacuum valve”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	pressure-vacuum valve
释义	pressure-vacuum valve /presh"euhr vak"yooh euhm, -yoohm/ a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits.
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