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| groundwater drain; groundwater drain pipe; subsoil water drain | |||
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地下水排水管 : 45 phrases in 8 subjects |
| Agriculture | 4 |
| Animal husbandry | 1 |
| Architecture | 1 |
| Ecology | 4 |
| Engineering geology | 2 |
| General | 1 |
| Hydroelectric power stations | 2 |
| Technology | 30 |
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