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分 索引 : 39 phrases in 12 subjects |
| Agriculture | 1 |
| Aviation | 4 |
| Desert science | 1 |
| Earth sciences | 1 |
| Electronics | 7 |
| General | 2 |
| Information technology | 7 |
| Librarianship | 2 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Technology | 10 |
| Telecommunications | 2 |
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