| |||
| глубокая очистка (воды) | |||
| тонкая очистка; доочистка | |||
|
fine purification : 4 phrases in 3 subjects |
| Chemical industry | 1 |
| Construction | 2 |
| Natural resourses and wildlife conservation | 1 |
| |||
| глубокая очистка (воды) | |||
| тонкая очистка; доочистка | |||
|
fine purification : 4 phrases in 3 subjects |
| Chemical industry | 1 |
| Construction | 2 |
| Natural resourses and wildlife conservation | 1 |