 |
| gas protection: 31 phrases in 14 subjects |
| Cables and cable production | 5 |
| Electrical engineering | 1 |
| Energy industry | 3 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Military | 8 |
| Mining | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 4 |
| Oil and gas technology | 1 |
| Sakhalin | 1 |
| Sakhalin A | 1 |
| Welding | 2 |