短語詞組短語submerged arc automatic welder 埋弧自動銲機submerged arc stud welder 埋弧螺柱銲機arc fusing welder 電弧熔銲機arc spot welder 電弧點銲機arc -welder lung 電弧銲工肺automatic arc -welder 自動弧銲機arc ot welder 電弧點銲機submerged arc guaranteed welder 埋弧自動銲機AC arc -welder 交流弧銲機 返回 arc welder