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| 联系法: 18 phrases in 11 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Aviation | 2 |
| China | 2 |
| General | 1 |
| Geology | 1 |
| Information technology | 2 |
| Name of organization | 1 |
| Space | 1 |
| Technology | 5 |
| Water resources | 1 |
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