backgouging 中文意思是什麼
backgouging
解釋
背面刨削-
Vertical welds not completely removed by backgouging shall be performed vertically up, unless specifically approved in writing by secco
對于不能通過逆向刨削完全清除的縱向焊縫應垂直施焊，除非賽科公司有特殊的書面指示不用垂直施焊。
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