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	taeniacidal taeniacide taenia coli taeniada taeniadea taeniafuge taeniarhynchus taeniasis taeniate taenidial taenidium taeniid taeniidae taenio taenio- taeniobranchia taeniodont taeniodonta taeniodontia taenioglossa taenioglossate taenioid taenioinei taeniopteris taeniosome

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