self-contained closed-circuit breathing apparatus
...隔绝装置.化学氧(NaC103)自救器.要求,检验,标识 英文名称： Respiratory Protective Devices for Self-Rescue - Self-Contained Closed-Circuit Breathing Apparatus - Chemical Oxygen (NaClO3) Escape Apparatus - Requirements, Testing, Marking ..
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self-contained closed-circuit breathing apparatus
自给式闭路呼吸器
以上为机器翻译结果，长、整句建议使用 人工翻译 。