 |
| |||
| churn drilling | |||
| American system of drilling; cable drilling; cable-tool drilling; free fall boring; rope and drop-pull method | |||
| ударно-канатне буріння: 16 phrases in 2 subjects |
| Mining | 1 |
| Oil and gas | 15 |
|
| |||
| churn drilling | |||
| American system of drilling; cable drilling; cable-tool drilling; free fall boring; rope and drop-pull method | |||
| ударно-канатне буріння: 16 phrases in 2 subjects |
| Mining | 1 |
| Oil and gas | 15 |