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精密管 : 17 phrases in 10 subjects |
| Agriculture | 1 |
| Company name | 1 |
| Compressors | 1 |
| Electronics | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 5 |
| Radio | 1 |
| Semiconductors | 1 |
| Space | 1 |
| Technology | 2 |
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