 |
| heating fuel: 88 phrases in 21 subjects |
| Astronautics | 1 |
| Automobiles | 1 |
| Aviation | 7 |
| Construction | 2 |
| Electronics | 5 |
| Energy industry | 32 |
| Engines | 1 |
| Food industry | 1 |
| General | 2 |
| Makarov | 2 |
| Mathematics | 1 |
| Military | 2 |
| Nanotechnology | 6 |
| Nautical | 1 |
| Nuclear and fusion power | 4 |
| Oil and gas technology | 1 |
| Oil processing plants | 3 |
| Sakhalin | 4 |
| Technology | 8 |
| Thermal engineering | 2 |
| Transport | 2 |