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| hybrid engine | |||
| composite engine | |||
| compound-engine | |||
| compound engine | |||
| комбинированный двигатель: 53 phrases in 11 subjects |
| Astronautics | 17 |
| Automobiles | 1 |
| Aviation | 3 |
| Electrical engineering | 2 |
| Makarov | 1 |
| Military | 17 |
| Military aviation | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 1 |
| Technology | 8 |
| Transport | 1 |