短語詞組短語pitch bead welding 斜坡堆銲銲箍Bead welding overlaying weld 堆銲powder plasma bead welding 粉末等離子弧堆銲bead welding alloy 堆銲郃金的tig bead welding tig 堆銲工藝wire feed bead welding 送絲堆銲bead welding materials 堆銲材料bead welding material 堆銲材料 返回 bead welding