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| 改河; 改移河道; 河槽变化; 河道变迁 | |||
| 河道演变 | |||
| 河床演变; 河道变迁:河道变化; 水道改道; 水道改变 | |||
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channel change : 16 phrases in 5 subjects |
| Aviation | 1 |
| Bridge construction | 2 |
| Electronics | 1 |
| Project management | 1 |
| Technology | 11 |
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