 |
| обработка сточных вод: 92 phrases in 20 subjects |
| Construction | 11 |
| Drilling | 1 |
| Ecology | 11 |
| Electronics | 3 |
| Energy industry | 12 |
| General | 2 |
| Hydraulic engineering | 5 |
| Makarov | 14 |
| Microelectronics | 1 |
| Military | 1 |
| Natural resourses and wildlife conservation | 7 |
| Oil / petroleum | 6 |
| Oil and gas technology | 2 |
| Technology | 6 |
| Trade classification | 1 |
| Transport | 1 |
| United Nations | 1 |
| Water resources | 2 |
| Water supply | 4 |
| Weapons of mass destruction | 1 |