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互 补晶体管 : 45 phrases in 10 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Computers | 4 |
| Electronics | 30 |
| Geophysics | 1 |
| Information technology | 4 |
| Metallurgy | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Telecommunications | 1 |
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