 |
| |||
| two roller bit; double-cone bit; twin-cone bit; two-cone bit; two-roller bit | |||
| двухшарошечное долото: 10 phrases in 5 subjects |
| Oil / petroleum | 5 |
| Oil and gas | 1 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Technology | 1 |
|
| |||
| two roller bit; double-cone bit; twin-cone bit; two-cone bit; two-roller bit | |||
| двухшарошечное долото: 10 phrases in 5 subjects |
| Oil / petroleum | 5 |
| Oil and gas | 1 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Technology | 1 |