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| plank flume; wooden stave flume | |||
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| wood-stave flume | |||
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| wood-stave flume | |||
| 木板槽: 17 phrases in 5 subjects |
| Architecture | 2 |
| Bridge construction | 2 |
| Hydraulics | 1 |
| Hydroelectric power stations | 2 |
| Technology | 10 |
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