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截门 : 56 phrases in 11 subjects |
| Architecture | 2 |
| Aviation | 2 |
| Electronics | 2 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 7 |
| Nautical | 1 |
| Rail transport | 3 |
| Refrigeration | 1 |
| Space | 4 |
| Technology | 32 |
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