| |||
| bit service life | |||
| bit life; drilling bit service life | |||
|
долговечность долота : 3 phrases in 2 subjects |
| Oil / petroleum | 2 |
| Oilfields | 1 |
| |||
| bit service life | |||
| bit life; drilling bit service life | |||
|
долговечность долота : 3 phrases in 2 subjects |
| Oil / petroleum | 2 |
| Oilfields | 1 |