 |
| |||
| épuration de l'eau | |||
| purification de l'eau; clarification d'eau; décantation d'eau; éclaircissement de l'eau | |||
| purification f | |||
| clarification de l'eau | |||
| осветление воды: 16 phrases in 7 subjects |
| Chemistry | 1 |
| Construction | 3 |
| Food industry | 1 |
| Hydraulic engineering | 2 |
| Mining | 7 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 1 |