 |
| |||
| drifting operation; drilling operation | |||
| |||
| driftage | |||
|
проходка слабо наклонной выработки : 3 Phrasen in 1 Thematik |
| Bergbau | 3 |
|
| |||
| drifting operation; drilling operation | |||
| |||
| driftage | |||
|
проходка слабо наклонной выработки : 3 Phrasen in 1 Thematik |
| Bergbau | 3 |