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化工技术 : 23 phrases in 14 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Business | 1 |
| Chemistry | 2 |
| China | 1 |
| Economy | 1 |
| Electronics | 4 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 3 |
| Marketing | 1 |
| Metallurgy | 2 |
| Oil processing plants | 2 |
| Technology | 1 |
| United Nations | 2 |
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