英语词汇“demand mask”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	demand mask
释义	demand mask demand mask An oxygen mask through which oxygen flows only when the wearer inhales. There is no oxygen flow when the wearer is exhaling. Most combat aircraft have demand oxygen systems, and combat crews use demand masks.
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。