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| K-ary relation | |||
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| metarelation | |||
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| n-tuple relation | |||
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元 关系 : 14 phrases in 9 subjects |
| Artificial intelligence | 1 |
| Economy | 1 |
| Information technology | 3 |
| Librarianship | 1 |
| Mathematics | 1 |
| Metallurgy | 1 |
| Statistics | 1 |
| Technology | 4 |
| Telecommunications | 1 |
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