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| Schlammbelebungsanlage f | |||
| Belebtschlammbecken n; Belebungsbecken n; Belüftungsanlage f; Belüftungsbecken n; Lüftungsbecken n | |||
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аэротэнк : 10 phrases in 3 subjects |
| Construction | 1 |
| Hydrology | 1 |
| Water supply | 8 |
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