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| 发动机 液体: 58 phrases in 9 subjects |
| Astronautics | 1 |
| Automobiles | 3 |
| Aviation | 4 |
| Economy | 1 |
| General | 4 |
| Nuclear physics | 1 |
| Space | 37 |
| Technology | 6 |
| Transport | 1 |
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