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| 主 发 动机: 43 phrases in 9 subjects |
| Astronautics | 3 |
| Aviation | 1 |
| Electronics | 2 |
| General | 7 |
| Jet engines | 1 |
| Military | 2 |
| Missiles | 2 |
| Oil processing plants | 1 |
| Technology | 24 |
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