| |||
rod and drop-pull system | |||
Canadian drilling; percussion-rod drilling; rod- tool drilling; rod-tool drilling | |||
rod-tool drill; rod tool drilling |
ударно -штанговое бурение : 11 phrases in 5 subjects |
Drilling | 1 |
Mining | 1 |
Oil / petroleum | 6 |
Oilfields | 1 |
Technology | 2 |