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| 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 |