英语词汇backing ring怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	backing ring
释义	backing ring 美/ ?b?k?? r?? / 简明释义支撑环：一种金属环，用于加固对接焊缝并防止焊接金属进入焊缝处的管道。网络释义短语 1 backing ring 机垫环 ; 衬环 ; 托圈 ; 衬环垫圈 2 weld with backing ring 背面垫环焊接 3 backing ring flange 衬环法兰双语例句 1 D ring is not a necessary backing part which has biological activity in these compounds. 环不是该类化合物具有生物活性的必需骨架部分。
随便看	self-contained water reservoir self-containing self-containing unit self containment self-containment self-containment self-contamination self-contemplation self-contemplations self contempt self-contempt self-contempt self-contemptuous self content self-content self-contented self-contentedly self-contentedness self-contentment self-content self contraction self contradict self-contradicting self-contradiction self contradiction

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