 |
| ignition: 38 phrases in 18 subjects |
| Armored vehicles | 1 |
| Astronautics | 3 |
| Astronomy | 1 |
| Aviation | 3 |
| Chemistry | 5 |
| Construction | 1 |
| Electronics | 1 |
| Engines | 1 |
| Food industry | 1 |
| Forestry | 5 |
| General | 3 |
| Metallurgy | 3 |
| Military | 1 |
| Mining | 2 |
| Oil and gas technology | 2 |
| Physics | 1 |
| Technology | 3 |
| Trucks/Lorries | 1 |