 |
| |||
| sand filter bed | |||
| send filter (Volha13) | |||
| sand strainer | |||
| sand filter | |||
| песочный фильтр: 26 phrases in 12 subjects |
| Cement | 1 |
| Construction | 1 |
| Ecology | 1 |
| Electronics | 3 |
| General | 3 |
| Karachaganak | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 6 |
| Oil and gas | 4 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Thermal engineering | 2 |