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| 阔顶堰; 宽顶堰 | |||
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| 宽顶堰 | |||
| 宽项堰 | |||
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| 宽顶堰 | |||
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| 宽顶堰 | |||
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broad crested weir : 7 phrases in 3 subjects |
| Hydraulics | 2 |
| Hydroelectric power stations | 3 |
| Technology | 2 |
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