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精度数据 : 18 phrases in 9 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Electronics | 3 |
| Geophysics | 3 |
| Information technology | 1 |
| Military | 1 |
| Shipbuilding | 1 |
| Space | 5 |
| Technology | 1 |
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