 |
| exhaust boiler: 23 phrases in 10 subjects |
| Astronautics | 1 |
| Construction | 1 |
| Energy industry | 7 |
| Makarov | 1 |
| Mechanic engineering | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 4 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Technology | 5 |
|
| exhaust boiler: 23 phrases in 10 subjects |
| Astronautics | 1 |
| Construction | 1 |
| Energy industry | 7 |
| Makarov | 1 |
| Mechanic engineering | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 4 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Technology | 5 |