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面极化 : 51 phrases in 10 subjects |
| Air defense | 7 |
| Aviation | 1 |
| Electronics | 15 |
| General | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 3 |
| Polymers | 1 |
| Space | 3 |
| Technology | 14 |
| Telecommunications | 3 |
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