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Down-hole jewelry (a generic term for all the special tools that are incorporated into an oil or gas well Sweetlana) | |||
downhole jewelry (academic.ru tat-konovalova) |
скважинные инструменты, оборудование : 6 phrases in 4 subjects |
Drilling | 3 |
Oilfields | 1 |
Production | 1 |
Technology | 1 |