 |
| oil ring: 175 phrases in 24 subjects |
| Aeronautics | 1 |
| Armored vehicles | 23 |
| Automated equipment | 3 |
| Automobiles | 41 |
| Aviation | 6 |
| Construction | 1 |
| Drilling | 2 |
| Electronics | 1 |
| Engines | 1 |
| Food industry | 1 |
| General | 2 |
| Makarov | 3 |
| Mechanic engineering | 5 |
| Military | 1 |
| Molikpaq | 1 |
| Nautical | 5 |
| Oil / petroleum | 4 |
| Oil and gas technology | 1 |
| Oilfields | 3 |
| Production | 3 |
| Rail transport | 5 |
| Sakhalin | 1 |
| Technology | 37 |
| Transport | 24 |