例句與造句

1. 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(yīng)垂直施焊，除非賽科公司有特殊的書面指示不用垂直施焊。
2. It's difficult to find backgouging in a sentence. 用backgouging造句挺難的