Metal separations, resulting from imperfections at the edges of the plate or skelp, parallel to the surface, which turn toward the ID or OD pipe surface when the edges are upset during welding.是什么意思_Metal separations, resulting from imperfections at the edges of the plate or skelp, parallel to the surface, which turn toward the ID or OD pipe surface when the edges are upset during welding.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句