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时间 图 : 116 phrases in 29 subjects |
| Agriculture | 2 |
| Artificial intelligence | 1 |
| Athletics | 2 |
| Automobiles | 1 |
| Aviation | 4 |
| Business | 4 |
| Construction | 1 |
| Desert science | 1 |
| Earth sciences | 2 |
| Ecology | 1 |
| Electronics | 2 |
| Explosives and Explosive Ordnance Disposal | 3 |
| General | 3 |
| Genetics | 2 |
| Geophysics | 1 |
| Information technology | 1 |
| Librarianship | 4 |
| Management | 1 |
| Metallurgy | 17 |
| Oil / petroleum | 8 |
| Otorhinolaryngology | 1 |
| Plastics | 1 |
| Space | 3 |
| Technology | 42 |
| Telecommunications | 3 |
| Textile industry | 1 |
| United Nations | 2 |
| Water resources | 1 |
| Wind Energy | 1 |
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