| |||
| взрывозащита (Featus); взрывозащищённость (Featus) | |||
|
explosion- proofness : 2 phrases in 2 subjects |
| Geology | 1 |
| Quality control and standards | 1 |
| |||
| взрывозащита (Featus); взрывозащищённость (Featus) | |||
|
explosion- proofness : 2 phrases in 2 subjects |
| Geology | 1 |
| Quality control and standards | 1 |