air-supply mask ; air-tube breathing apparatus
... forced air-cooled tube 压力空气冷却管 air-tube breathing apparatus 气管呼吸器 air-tube oil cooler 气管式滑油冷却器 ...
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长管空气呼吸器 Air Line
除非备有自己式呼吸器（SCBA）或空气管呼吸器，任何人，包括救援人员，都不能进入氧浓度低于19.5%的区域。
Personnel, including rescue workers, should not enter areas where the oxygen concentration is below19.5%, unless provided with a self-contained breathing apparatus (SCBA) or airline respirator.
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