self-contained, compressed-air breathing apparatus

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1.	自给式空气呼吸器矿用一氧化... ... 3．4 额定贮气量 air supply volume 3．1 自给式空气呼吸器 self-contained compressed air breathing apparatu… www.safetak.com
2.	自给式呼吸器具自给式... ... ) self-supported respirator 自给式呼吸器 ) self-contained compressed air breathing apparatus 自给式呼吸器具 ... www.dictall.com
3.	自携式压缩空气呼吸器 www.dictall.com