 |
| |||
| self- cleaning rolling cutter; self-cleaning rolling cutter | |||
| самоочищающаяся шарошка долота: 9 phrases in 4 subjects |
| Oil / petroleum | 3 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 4 |
|
| |||
| self- cleaning rolling cutter; self-cleaning rolling cutter | |||
| самоочищающаяся шарошка долота: 9 phrases in 4 subjects |
| Oil / petroleum | 3 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Oilfields | 4 |