 |
| vent tank: 40 phrases in 18 subjects |
| Aerohydrodynamics | 1 |
| Armored vehicles | 1 |
| Astronautics | 8 |
| Automobiles | 1 |
| Aviation | 3 |
| Caspian | 1 |
| General | 1 |
| Makarov | 3 |
| Molikpaq | 1 |
| Nautical | 8 |
| Nuclear and fusion power | 1 |
| Oil and gas | 1 |
| Sakhalin | 1 |
| Shipbuilding | 1 |
| Technology | 5 |
| Torpedoes | 1 |
| Transport | 1 |
| Weapons of mass destruction | 1 |