Similarly, magnetic fields are generated by electric currents and by time-varying electric fields . 相仿地,磁场由电流和随时间变化的电场产生。
The electric currents and the magnetic fluctuations, which cause them are, very similar in form . 电流以及产生这种电流的磁场波动在形式上极为相似。
Lines which are everywhere tangential to the direction of the flow of electric current are called streamlines . 处处均与电流方向相切的曲线称为流线。
He produced an electric spark across a gap between two metal balls by applying an electric current to them . 他把电流接通到两个金属球上而在其间的间隙处产生火花。
Using votis electric pile he discovered how to use an electric current to break down various materials into their separate elements . 他用伏打电池发现通电可将各种物质分解成单质元素。
The distribution of voltage and the flow of electric current within a field of the sheet are governed by the laws of potentials . 在该薄板的电场中,电压的分布以及电流的流动,均取决于电位定律。
They can start one by one to reduce electric current 可逐台启动,降低启动电流。
Simple discuss of electric current problem in electric circuits 电路中的电流问题析
How do you feel when a weak electric current passes your body 你想体验身体导电的感觉吗?
Research for electric current measured value of insulate article 绝缘试品电流测量值的研究