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| 分离层层析: 12 phrases in 9 subjects |
| Agriculture | 2 |
| Animal husbandry | 1 |
| Biotechnology | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Genetics | 1 |
| Geology | 2 |
| Technology | 2 |
| Water resources | 1 |
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