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| upper course | |||
| upstream section | |||
| head reach; headwater section | |||
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上游段 : 23 phrases in 8 subjects |
| Aviation | 1 |
| Construction | 2 |
| Engineering geology | 1 |
| General | 1 |
| Hydraulics | 1 |
| Hydroelectric power stations | 1 |
| Otorhinolaryngology | 1 |
| Technology | 15 |
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