| |||
| шарошечное долото | |||
| конусное долото | |||
| |||
| шарошечное долото | |||
| |||
| шарошечное долото | |||
|
cone rock bit : 17 phrases in 4 subjects |
| Oil / petroleum | 7 |
| Oil and gas | 8 |
| Oil and gas technology | 1 |
| Technology | 1 |
| |||
| шарошечное долото | |||
| конусное долото | |||
| |||
| шарошечное долото | |||
| |||
| шарошечное долото | |||
|
cone rock bit : 17 phrases in 4 subjects |
| Oil / petroleum | 7 |
| Oil and gas | 8 |
| Oil and gas technology | 1 |
| Technology | 1 |