 |
| |||
| bit life; drilling bit service life | |||
| bit service life | |||
|
долговечность долота : 3 do fraz, 2 tematyki |
| Pola naftowe | 1 |
| Ropa / ropa naftowa | 2 |
|
| |||
| bit life; drilling bit service life | |||
| bit service life | |||
|
долговечность долота : 3 do fraz, 2 tematyki |
| Pola naftowe | 1 |
| Ropa / ropa naftowa | 2 |