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偏压 器 : 48 phrases in 14 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Communications | 1 |
| Electric machinery | 1 |
| Electronics | 8 |
| General | 5 |
| Geophysics | 3 |
| Information technology | 2 |
| Materials science | 5 |
| Metallurgy | 2 |
| Oil / petroleum | 3 |
| Shipbuilding | 2 |
| Space | 2 |
| Technology | 11 |
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