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幕线 : 22 phrases in 10 subjects |
| Air defense | 2 |
| Architecture | 1 |
| Aviation | 2 |
| Electronics | 1 |
| Finances | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Management | 1 |
| Technology | 11 |
| Telecommunications | 1 |
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