[电] horizontal ring induction furnace

shuǐ píng huán xíng gǎn yìng lú ㄕㄨㄟˇ ㄆㄧㄥˊ ㄏㄨㄢˊ ㄒㄧㄥˊ ㄍㄢˇ ㄧㄥˋ ㄌㄨˊ