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| 耦合系统 | |||
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coupling system : 24 phrases in 10 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Electric machinery | 1 |
| Electronics | 4 |
| Geophysics | 1 |
| Information technology | 2 |
| Rail transport | 1 |
| Space | 4 |
| Technology | 7 |
| Telecommunications | 1 |
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