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| impulse stroke; pulse stroke | |||
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脉冲冲程 : 29 phrases in 8 subjects |
| Air defense | 2 |
| Aviation | 2 |
| Earth sciences | 1 |
| Electronics | 3 |
| Geophysics | 2 |
| Mathematics | 1 |
| Space | 2 |
| Technology | 16 |
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