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| подача бурового долота на забой (MichaelBurov) | |||
| подача долота | |||
| подача бурового долота (на забой) | |||
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drilling bit feed : 5 phrases in 3 subjects |
| Oil / petroleum | 2 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
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