 |
| tank vents: 40 phrases in 16 subjects |
| Aerohydrodynamics | 1 |
| Armored vehicles | 1 |
| Astronautics | 6 |
| Automobiles | 1 |
| Aviation | 2 |
| Caspian | 1 |
| Makarov | 6 |
| Nautical | 7 |
| Oil / petroleum | 3 |
| Oil and gas | 1 |
| Sakhalin | 1 |
| Shipbuilding | 1 |
| Technology | 6 |
| Torpedoes | 1 |
| Transport | 1 |
| Weapons of mass destruction | 1 |