 |
| защитная каска: 10 phrases in 9 subjects |
| Construction | 1 |
| Drilling | 1 |
| Mining | 2 |
| Occupational health & safety | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Security systems | 1 |
| Weapons of mass destruction | 1 |
| Welding | 1 |
|
| защитная каска: 10 phrases in 9 subjects |
| Construction | 1 |
| Drilling | 1 |
| Mining | 2 |
| Occupational health & safety | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Security systems | 1 |
| Weapons of mass destruction | 1 |
| Welding | 1 |