 |
| dust separator: 11 phrases in 8 subjects |
| Construction | 1 |
| Ecology | 2 |
| Leather | 1 |
| Metallurgy | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 1 |
| Oilfields | 1 |
| Technology | 3 |
|
| dust separator: 11 phrases in 8 subjects |
| Construction | 1 |
| Ecology | 2 |
| Leather | 1 |
| Metallurgy | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 1 |
| Oilfields | 1 |
| Technology | 3 |