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导光束 : 52 phrases in 11 subjects |
| Air defense | 1 |
| Aviation | 4 |
| Cartography | 1 |
| Earth sciences | 5 |
| Electronics | 7 |
| Metallurgy | 1 |
| Remote sensing | 1 |
| Shipbuilding | 2 |
| Space | 15 |
| Technology | 14 |
| Textile industry | 1 |
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