GbEng
金属内电流是由电子运动引起的。 An electric current in metal is caused by the movement of electrons.
这个电钮接通电流。 This button switches the current on.
电晕在电晕放电中在高压电极出现的一种微弱光辉，常伴随有朝向低压电极的电流 A faint glow enveloping the high-field electrode in a corona discharge, often accompanied by streamers directed toward the low-field electrode.
开关一种用来控制电路中电流量的电流器件 An electrical relay used to control the flow of power in a circuit.
电流的，伏打（式）的通过化学反应产生的电流的 Producing electricity by chemical action.
检流计，电流计一种仪器，用以探测、测量和测定微小电流方向，采用线圈在磁场中产生的机械效果的方法 An instrument used to detect, measure, and determine the direction of small electric currents by means of mechanical effects produced by a coil in a magnetic field.