compressed air breathing apparatus造句

Respiratory protective devices - lung governed demand self - contained open - circuit compressed air breathing apparatus with full face mask or mouthpiece assembly for escape - requirements , testing , marking
呼吸保护装置.逃生用装全罩式面具或口罩式组件的需氧量配套开路压缩空气呼吸器.要求试验标记
Respiratory protective devices - lung governed demand self - contained open - circuit compressed air breathing apparatus with full face mask or mouthpiece assembly for escape - requirements , testing , marking
呼吸保护装置.逃逸用带全面罩或口罩组件的满足需氧量的独立开路压缩空气呼吸装置.要求检验和标记
It's difficult to find compressed air breathing apparatus in a sentence. 用compressed air breathing apparatus造句挺难的

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