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| 因子模型 | |||
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factor model : 17 phrases in 9 subjects |
| Aviation | 1 |
| Business | 2 |
| Earth sciences | 1 |
| Finances | 2 |
| Multimedia | 1 |
| Nautical | 2 |
| Securities | 3 |
| Space | 2 |
| Technology | 3 |
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