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piston engine : 97 phrases in 24 subjects |
| Aerohydrodynamics | 1 |
| Air defense | 3 |
| Armored vehicles | 3 |
| Automobiles | 9 |
| Aviation | 11 |
| Energy industry | 1 |
| Engines | 2 |
| General | 1 |
| Makarov | 1 |
| Mathematics | 1 |
| Mechanic engineering | 4 |
| Meteorology | 1 |
| Military | 5 |
| Nautical | 5 |
| Production | 1 |
| Rail transport | 1 |
| Refrigeration | 1 |
| Shipbuilding | 3 |
| Soviet | 1 |
| Space | 6 |
| Sports | 1 |
| Technology | 26 |
| Thermal engineering | 1 |
| Transport | 8 |