正压下 meaning in Chinese
direct draft
direct draught
Examples
- Respiratory protective devices - compressed air line breathing apparatus with demand valve - apparatus with a half mask at positive pressure - requirements , testing , marking
呼吸防护装置.带用量阀的压缩空气管路呼吸装置.在正压下半罩式装置.要求检验和标记 - Respiratory protective devices - compressed air line breathing apparatus with demand valve - part 2 : apparatus with a half mask at positive pressure - requirements , testing , marking
呼吸防护装置.带用量阀的压缩空气管路呼吸装置.第2部分:在正压下半罩式面具装置.要求检验和标记