a coil of wire around an iron core; becomes a magnet when current passes through the coil

 
  • 纏在鐵核上的線(xiàn)圈;當電流通過(guò)線(xiàn)圈時(shí)變成磁體
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan