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位置数据 : 19 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 7 |
| Computer numerical control | 1 |
| Earth sciences | 1 |
| Electronics | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Information technology | 1 |
| Space | 3 |
| Technology | 1 |
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