Weld penetration and wire melting speed of AC PMIG welding not only have relationship with welding current but also with electrode negative ratio.是什么意思_Weld penetration and wire melting speed of AC PMIG welding not only have relationship with welding current but also with electrode negative ratio.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句