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千萬人都在用的超大詞匯詞典翻譯APP
- Respiratory protective devices for self - rescue - self - contained closed - circuit compressed oxygen breathing apparatus incorporating a hood - requirements , testing , marking
帶面罩的自救用自帶閉路式壓縮氧氣呼吸器的呼吸防護(hù)
An Oxygen Breathing Apparatus or OBA is a rebreather. It is used primarily in firefighting.
詳細(xì)百科解釋