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储频器 : 34 phrases in 10 subjects |
| Air defense | 6 |
| Automobiles | 2 |
| Aviation | 2 |
| Computers | 1 |
| Electronics | 14 |
| Information technology | 4 |
| Multimedia | 1 |
| Shipbuilding | 1 |
| Space | 2 |
| Telecommunications | 1 |
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