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极变换 : 46 phrases in 10 subjects |
| Air defense | 1 |
| Electric machinery | 3 |
| Electronics | 9 |
| General | 4 |
| Geophysics | 2 |
| Information technology | 2 |
| Oil / petroleum | 4 |
| Space | 1 |
| Technology | 17 |
| Telecommunications | 3 |
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