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涡盘 : 36 phrases in 12 subjects |
| Architecture | 2 |
| Aviation | 1 |
| Chemistry | 1 |
| Compressors | 11 |
| Electric machinery | 3 |
| Electronics | 2 |
| General | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Pest control | 2 |
| Space | 1 |
| Technology | 9 |
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