 |
| |||
| breathing mask | |||
| air mask; breather mask | |||
| facemask (grafleonov) | |||
| face mask | |||
| |||
| breather mask | |||
| дыхательная маска: 15 phrases in 7 subjects |
| Aviation | 1 |
| Firefighting and fire-control systems | 8 |
| General | 1 |
| Medical | 2 |
| Occupational health & safety | 1 |
| Oil processing plants | 1 |
| Scuba diving | 1 |