intermittent oxygen breathing 间歇性吸氧 oxygen breathing apparatus 氧气呼吸器 ; 输氧呼吸器 ; 氧气面具 oxygen breathing a aratus 氧气面具 ..
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飞机上的氧气面具只用于紧急情况。
飞机上氧气面具只用于紧急情况。
在其第二次接近时，歼8飞行员被看到摘下氧气面具，并被看到正在向机组人员作一个向前推进的手势信号。
On this second approach the F-8 pilot was observed to have his oxygen mask removed and was seen gesturing to the crew with hand signals in a pushing motion.
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