респиратор : 52 phrases in 16 subjects |
Chemistry | 7 |
Construction | 6 |
Firefighting and fire-control systems | 1 |
General | 3 |
Medical | 10 |
Medical appliances | 5 |
Metallurgy | 1 |
Military | 1 |
Mining | 1 |
Navy | 1 |
Nuclear physics | 1 |
Occupational health & safety | 3 |
Security systems | 1 |
Technology | 9 |
Textile industry | 1 |
Welding | 1 |