| |||
| bit life; drilling bit service life | |||
| bit service life | |||
|
долговечность долота : 3 phrases, 2 sujets |
| Champs de pétrole | 1 |
| Pétrole / pétrole | 2 |
| |||
| bit life; drilling bit service life | |||
| bit service life | |||
|
долговечность долота : 3 phrases, 2 sujets |
| Champs de pétrole | 1 |
| Pétrole / pétrole | 2 |