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发射 脉冲 : 65 phrases in 13 subjects |
| Air defense | 11 |
| Automobiles | 1 |
| Aviation | 2 |
| Construction | 2 |
| Earth sciences | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| General | 2 |
| Information technology | 6 |
| Metallurgy | 3 |
| Oil / petroleum | 4 |
| Space | 5 |
| Technology | 25 |
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