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数据单位 : 12 phrases in 9 subjects |
| Agriculture | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Fishery fishing industry | 3 |
| General | 1 |
| Information technology | 2 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 1 |
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