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sludge conditioning | |||
sludge conditioning (пред обезвоживанием) | |||
activated sludge treatment | |||
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activated sludge treatment (сточных вод); activated-sludge treatment (сточных вод) |
обработка активного ила: 4 phrases in 3 subjects |
Energy industry | 1 |
Makarov | 1 |
Natural resourses and wildlife conservation | 2 |