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分 挡 : 56 phrases in 10 subjects |
| Agriculture | 2 |
| Automobiles | 3 |
| Drilling | 1 |
| Electric machinery | 1 |
| Electronics | 3 |
| General | 7 |
| Metallurgy | 4 |
| Oil / petroleum | 4 |
| Oil processing plants | 1 |
| Technology | 30 |
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