英语词汇“backing ring”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	backing ring
释义	backing ring noun : a metal ring used inside a butt-welded joint to reinforce the joint and to prevent weld metal from entering the pipe at the joint
随便看	keV kevalin kevazingo kevel kew kewasinga kewasingo keweenawan Kewpie kew weed kex key key keyage keyaki keyauwee keybank key bargain key bed key bit key block keyboard keyboard keyboarder keyboardist

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