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| sagpipe | |||
| depressed sewer | |||
| inverted siphon; inverted syphon; inverted tube | |||
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倒虹 管 : 21 phrases in 7 subjects |
| Architecture | 1 |
| Bridge construction | 4 |
| Electronics | 1 |
| Hydraulics | 1 |
| Hydroelectric power stations | 2 |
| Technology | 11 |
| Water resources | 1 |
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