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| 距离定位: 22 phrases in 9 subjects |
| Air defense | 2 |
| Aviation | 2 |
| Earth sciences | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Space | 4 |
| Technology | 8 |
| Telecommunications | 1 |
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