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
Word History
First Known Use
1937, in the meaning defined above
| 单词 | backing ring |
| 释义 | backing ringnoun : 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 Word HistoryFirst Known Use 1937, in the meaning defined above |
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