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| 复孔穿孔: 32 phrases in 12 subjects |
| Agriculture | 1 |
| Astronautics | 1 |
| Business | 2 |
| Computers | 2 |
| Economy | 1 |
| Electronics | 1 |
| General | 1 |
| Information technology | 2 |
| Mathematics | 2 |
| Metallurgy | 8 |
| Oil / petroleum | 2 |
| Technology | 9 |
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