half mask meaning in English
半罩面具
Examples
- Respiratory protective devices - half masks and quarter masks - requirements , testing , marking
呼吸保护装置.半面罩和四分之一面罩.要求试验和标记 - Respiratory protective devices - half masks and quarter masks - requirements , testing , marking
呼吸保护装置.半罩面口罩和四分之一罩面口罩.要求,试验和标记 - Respiratory protective devices - filtering half masks to protect against particles - requirements , testing , marking
呼吸防护装置.颗粒防护用过滤半面罩.要求检验和标记 - Respiratory protective devices - filtering half masks to protect against particles - requirements , testing , marking
呼吸保护装置.颗粒防护用过滤式半面罩.要求试验标记 - Respiratory protective devices - half masks and quarter - masks - requirements , testing , marking ; german version en 140 : 1998
呼吸防护装置.半面罩和四分之一面罩.要求,试验,标记