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字符 字段 : 31 phrases in 10 subjects |
| Computers | 1 |
| Data processing | 2 |
| Electronics | 1 |
| General | 1 |
| Information technology | 9 |
| Librarianship | 6 |
| Metallurgy | 1 |
| Space | 2 |
| Technology | 6 |
| Telecommunications | 2 |
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