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储频 : 53 phrases in 12 subjects |
| Air defense | 11 |
| Automobiles | 3 |
| Aviation | 5 |
| Computers | 1 |
| Earth sciences | 1 |
| Electronics | 19 |
| Information technology | 4 |
| Multimedia | 1 |
| Project management | 1 |
| Shipbuilding | 1 |
| Space | 5 |
| Telecommunications | 1 |
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