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精密 型 : 32 phrases in 11 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Construction | 1 |
| Electronics | 3 |
| Geophysics | 1 |
| Mechanic engineering | 2 |
| Metallurgy | 11 |
| Plastics | 1 |
| Polymers | 1 |
| Space | 1 |
| Technology | 8 |
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