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顶开式 : 16 phrases in 10 subjects |
| Animal husbandry | 1 |
| Automobiles | 2 |
| Commerce | 1 |
| Economy | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| General | 1 |
| International trade | 1 |
| Metallurgy | 2 |
| Technology | 5 |
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