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| бурильный инструмент от ведущей трубы до долота (MichaelBurov) | |||
| бурильная колонна; бурильный инструмент, спущенный в скважину | |||
| drilling shaft: 6 phrases in 5 subjects |
| Mining | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Production | 1 |
| Technology | 1 |
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