![]() |
| |||
рециркуляция активного ила |
sludge return: 23 phrases in 10 subjects |
Construction | 5 |
Ecology | 4 |
Energy industry | 1 |
General | 1 |
Karachaganak | 1 |
Makarov | 2 |
Natural resourses and wildlife conservation | 3 |
Sewage and wastewater treatment | 1 |
Technology | 2 |
Water supply | 3 |