 |
| spark ignition: 77 phrases in 22 subjects |
| Aerohydrodynamics | 1 |
| Apollo-Soyuz | 1 |
| Armored vehicles | 7 |
| Astronautics | 4 |
| Automated equipment | 1 |
| Automobiles | 16 |
| Aviation | 2 |
| Energy industry | 2 |
| Engines | 3 |
| Firefighting and fire-control systems | 2 |
| Makarov | 2 |
| Military | 4 |
| Missiles | 1 |
| Nautical | 1 |
| Nuclear and fusion power | 1 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Technology | 10 |
| Tengiz | 2 |
| Thermal engineering | 2 |
| Transport | 12 |
| Welding | 1 |