The hight voltage make use of a period of melting and a in front of middle period of oxidation time as soon as possible, we should make out scum and insure that electrical arc heat up in the scum.是什么意思_The hight voltage make use of a period of melting and a in front of middle period of oxidation time as soon as possible, we should make out scum and insure that electrical arc heat up in the scum.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句