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reciprocating engine : 37 phrases in 16 subjects |
| Armored vehicles | 1 |
| Aviation | 7 |
| Construction | 1 |
| Energy industry | 9 |
| Energy system | 1 |
| General | 1 |
| Machinery and mechanisms | 2 |
| Mechanic engineering | 1 |
| Military | 1 |
| Nautical | 3 |
| Refrigeration | 1 |
| Shipbuilding | 1 |
| Soviet | 1 |
| Space | 2 |
| Technology | 4 |
| Transport | 1 |