【运输】修补焊接【运输】补焊

通过对射孔枪管修复特点的分析,提出了先利用小堵板盖住射孔眼的根部,再进行补焊的新工艺,实现了枪管的重复利用,为油田同类产品的修复提供了宝贵经验。

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Belsey hiatal hernia repair

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plastic repair of Oddi sphincter

tissue repair tissue