| 1. | Electric currents persisted only for a moment .
电的流动只持续短暂时间。
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| 2. | The electric current varies directly with the voltage .
电流与电压成正比。
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| 3. | Wires transmit an electric current .
电线传导电流。
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| 4. | The question was how could electric current make words ?
问题是，电流怎样才能变成言词？
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| 5. | The signal consists of surges of electrons or electric current .
该信号是由电涌即电流所组成。
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| 6. | The machine will start running as soon as the electric current is turned on .
一通电，机器就立刻开始运转。
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| 7. | Oersted demonstrated that electric currents could produce magnetic effects .
奥斯忒表演了电流能引起磁效应。
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| 8. | A flow of charge from one place to another constitutes an electric current .
电荷从一处流到另一处就构成了电流。
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| 9. | We make an electron gun which consists of a tungsten wire heated by an electric current .
我们制造了一把电子枪，它包括一根用电流加热的钨丝。
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| 10. | The corresponding electric currents are used to deflect an electron beam in a cathode-ray tube .
相应的电流就用来使阴极射线管里的电子束偏转。
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