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| 收回百分比 | |||
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recovery percentage : 29 phrases in 9 subjects |
| Agriculture | 1 |
| Commerce | 2 |
| Economy | 5 |
| Engineering geology | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 14 |
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