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磁分离器 : 40 phrases in 11 subjects |
| Animal husbandry | 1 |
| Earth sciences | 2 |
| Electronics | 5 |
| General | 3 |
| Metallurgy | 3 |
| Physics | 1 |
| Plastics | 3 |
| Shipbuilding | 2 |
| Space | 1 |
| Steel production | 1 |
| Technology | 18 |
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