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术语 对于主题 石油和天然气技术 包含 First | 所有字形 | 只容许请确匹配
英语俄语
first conductor short string of large casing used offshore and in marshy locations to keep top of well-bore open and provide means of conveying up-flowing drilling mud from well-bore to mud pitшахтовое направление скважины
first oil discoveredвремя обнаружения первой нефти в скважине