| |||
percussion bit | |||
chopping bit | |||
cable drilling bit; chopping drilling bit |
ударное долото: 69 phrases in 10 subjects |
Construction | 4 |
Drilling | 3 |
Geology | 2 |
Makarov | 1 |
Mining | 6 |
Oil / petroleum | 23 |
Oil and gas | 7 |
Oil and gas technology | 11 |
Oilfields | 7 |
Technology | 5 |