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分级 式 : 170 phrases in 22 subjects |
| Agriculture | 13 |
| Automobiles | 3 |
| Aviation | 2 |
| Chemistry | 4 |
| Desert science | 1 |
| Earth sciences | 1 |
| Economy | 1 |
| Electronics | 6 |
| Engineering geology | 1 |
| Fishery fishing industry | 3 |
| General | 2 |
| Information technology | 1 |
| Management | 2 |
| Metallurgy | 15 |
| Multimedia | 1 |
| Oil / petroleum | 1 |
| Project management | 1 |
| Refrigeration | 2 |
| Space | 3 |
| Sports | 1 |
| Technology | 104 |
| Telecommunications | 2 |
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