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| 溢洪道堰顶 | |||
| 溢流堰顶; 溢洪道顶部 | |||
| 溢洪道顶 (部) | |||
| spillway crest: 24 phrases in 3 subjects |
| Electronics | 1 |
| Hydroelectric power stations | 6 |
| Technology | 17 |
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