According to the falling body weight,shape and well structure,designed washover milling fishing tool.
根据下落物的、状及井身结构,设计制作了套铣打捞器。
According to the falling body weight,shape and well structure,designed washover milling fishing tool.
根据下落物的、状及井身结构,设计制作了套铣打捞器。
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