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| 箱涵洞; 箱涵洞 | |||
| 箱形涵洞; 箱式围堰 | |||
| 箱形涵洞; 矩形涵洞 | |||
| 箱式涵洞; 箱涵; 箱形暗渠 | |||
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box culvert : 17 phrases in 5 subjects |
| Bridge construction | 5 |
| Earth sciences | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 2 |
| Technology | 8 |
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