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piston engine : 77 phrases in 21 subjects |
| Aerohydrodynamics | 1 |
| Armored vehicles | 3 |
| Automobiles | 9 |
| Aviation | 5 |
| Energy industry | 1 |
| Engines | 1 |
| General | 1 |
| Makarov | 1 |
| Mathematics | 1 |
| Mechanic engineering | 4 |
| Meteorology | 1 |
| Military | 5 |
| Nautical | 5 |
| Production | 1 |
| Rail transport | 1 |
| Refrigeration | 1 |
| Shipbuilding | 3 |
| Sports | 1 |
| Technology | 23 |
| Thermal engineering | 1 |
| Transport | 8 |