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

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	discant discantus discard discard discarnate discase disc brake disc cultivator disc drill disced discept disceptation discern discernable discernableness discernably discerner discernible discernibleness discernibly discerning discerningly discernment discerp discerpible

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