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主 总线 : 20 phrases in 11 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Business | 1 |
| Computer networks | 1 |
| Electronics | 3 |
| Information technology | 5 |
| Metallurgy | 1 |
| Multimedia | 1 |
| Shipbuilding | 2 |
| Space | 3 |
| Technology | 1 |
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