quintuple frequency induction furnace

英 [ˈkwɪntjʊpl ˈfriːkwənsi ɪnˈdʌkʃn ˈfɜːnɪs] 美 [ˈkwɪntjʊpl ˈfriːkwənsi ɪnˈdʌkʃn ˈfɜːrnɪs]
quintuple frequency induction furnace
网络  五倍周波感应电炉