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输入系数 : 33 phrases in 13 subjects |
| Aviation | 1 |
| Business | 1 |
| Computers | 1 |
| Earth sciences | 4 |
| Geophysics | 1 |
| Information technology | 1 |
| Mathematics | 3 |
| Metallurgy | 1 |
| Programming | 1 |
| Space | 12 |
| Technology | 5 |
| Telecommunications | 1 |
| United Nations | 1 |
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