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| drainage piping (统); pipe drainage (统); pipe system (统) | |||
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排水管系 : 35 phrases in 7 subjects |
| Agriculture | 2 |
| Architecture | 3 |
| Ecology | 2 |
| Hydraulics | 4 |
| Hydroelectric power stations | 3 |
| Shipbuilding | 2 |
| Technology | 19 |
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