| |||
| advance timbering; cantilever timbering; console support; console timbering; fore support; forepoling; overhanging beam; telescoping support | |||
|
передовая крепь : 13 phrases in 3 subjects |
| Geology | 1 |
| Military | 1 |
| Mining | 11 |
| |||
| advance timbering; cantilever timbering; console support; console timbering; fore support; forepoling; overhanging beam; telescoping support | |||
|
передовая крепь : 13 phrases in 3 subjects |
| Geology | 1 |
| Military | 1 |
| Mining | 11 |