pressure breathing regulator 增压供氧调节器

pressure-breathing regulator 增压呼吸调节器

deman breathing regulator 呼吸供气调节器

first stage breathing regulator 一级呼吸调节器

self-heated first stage breathing regulator 自加热一级呼吸调节器

pressure breathing oxygen regulator 增压供氧调节器

breathing with the regulator 用呼吸管呼吸

free flow regulator breathing 大量漏气调节器的呼吸

emergency breathing gas demand regulator 应急呼吸按需供气调节器