短语词组短語weld toe crack 銲趾裂紋weld toe cracks 銲趾裂紋weld toe ground 銲趾打磨weld toe angle 銲趾角weld toe TIG remelting 銲趾TIG重熔weld toe & toe 銲趾weld toe defect 銲趾缺欠weld toe and weld root 銲趾和銲根toe weld 趾部銲縫 返回 weld toe