 |
| |||
| catch drain; catchwater drain; for drainage; opening for drainage | |||
| drainage working; mine drainage gallery | |||
| |||
| drainage workings | |||
| дренажная выработка: 3 phrases in 1 subject |
| Mining | 3 |
|
| |||
| catch drain; catchwater drain; for drainage; opening for drainage | |||
| drainage working; mine drainage gallery | |||
| |||
| drainage workings | |||
| дренажная выработка: 3 phrases in 1 subject |
| Mining | 3 |