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信息 目标 : 19 phrases in 9 subjects |
| Aviation | 4 |
| Computer numerical control | 1 |
| Cryptography | 1 |
| Electronics | 3 |
| General | 1 |
| Geophysics | 1 |
| Project management | 1 |
| Space | 6 |
| Technology | 1 |
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