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| 主组分; 主成分 | |||
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| principal component: 59 phrases in 14 subjects |
| Agriculture | 3 |
| Artificial intelligence | 6 |
| Aviation | 1 |
| Business | 2 |
| Desert science | 1 |
| Earth sciences | 20 |
| Electronics | 2 |
| Genetics | 1 |
| Geology | 1 |
| Information technology | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 15 |