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| испытание двигателя | |||
| engine research: 18 phrases in 8 subjects |
| Astronautics | 1 |
| Automobiles | 2 |
| General | 1 |
| Military | 7 |
| Mining | 1 |
| Nautical | 3 |
| Oil and gas | 2 |
| Transport | 1 |
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