论文部分内容阅读
ＲＰＰ－２０型自给正压式空气呼吸器──有毒、有害气体中作业人员呼吸防护的有效武器上海潜水装备厂孙财平ＲＰＰ—２０型自给正压式空气呼吸器是一种符合国际呼吸防护器类标准的高性能的新型个人呼吸防护装具。该装具工作时面罩内始终保持略高于外界环境气压的压力，外...
RPP-20 self-contained positive pressure air respirator ─ ─ an effective weapon for respiratory protection of toxic and harmful gases workers Shanghai diving equipment factory Sun Caiping RPP-20 self-contained positive pressure air respirator is an international respirator Standard high-performance new personal respiratory protective gear. The equipment working mask always maintain slightly above the pressure of the external environment pressure, external ...