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Drill Pipe For Oil Field 石油钻探杆 ; 酒精钻探杆
·2,447,543篇论文数据，部分数据来源于NoteExpress
For Zhongyuan oil field belonging to the complex part oil field, the large loss was suffered every year for disabled oil pipe.
中原油田属极复杂断块油田，每年因油管失效造成极大的经济损失。
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