要减弱通电螺线管的磁性下列方法中可以采用的是a改变电流方�b减�螺线管的匝数c在螺线管内插入铁芯d增大电流——青夏教育精英家教�—— Template




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tomski要减弱通电螺线管的磁性下列方法中可以采用的是a改变电流方�b减�螺线管的匝数c在螺线管内插入铁芯d增大电流——青夏教育精英家教�—— coloring