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高线式 : 26 phrases in 11 subjects |
| Air defense | 1 |
| Automobiles | 5 |
| Aviation | 1 |
| Desert science | 1 |
| Earth sciences | 2 |
| Electric machinery | 2 |
| Electronics | 3 |
| Geophysics | 1 |
| Space | 1 |
| Technology | 6 |
| Textile industry | 3 |
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