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| 液体〔燃料〕火箭〔发动机〕 | |||
| 液体火箭; 液体火箭发动机; 燃料推进火箭 | |||
| liquid rocket: 52 phrases in 5 subjects |
| Air defense | 1 |
| Aviation | 4 |
| General | 7 |
| Space | 38 |
| Technology | 2 |
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