You turn on your lamp, it happens pretty fast because current can flow very quickly through wire or through a charged - a solution of ions.

你打开灯 灯马上就亮了,电流可以迅速通过,电线或者带电荷的--电解质的溶液

耶鲁公开课 - 生物医学工程探索课程节选

You turn on your lamp, it happens pretty fast because current can flow very quickly through wire or through a charged - a solution of ions.

你打开灯 灯马上就亮了,电流可以迅速通过,电线或者带电荷的--电解质的溶液

耶鲁公开课 - 生物医学工程探索课程节选