Ac current probe act as a current transformer which the core can be opened and clamped on a current carrying conductor.

交流电流探头是利用电流变压器的原理来测试电流的﹐它的中心部分可以打开和卡紧在有电流流过的导线上。

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We have discussed the role of a current-driven shield carrying an equal and opposite current to reduce generated noise by reducing the magnetic field around a conductor.

上文探讨了载流屏蔽体的效果——让包围导线的屏蔽层带有大小相等、方向相反的电流，从而抵消磁场，降低干扰。

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Inspired by the force action caused by magnetic field to current carrying conductor and Newton's third law, we tried to make a new type of DC motor, yet we failed.

受磁场对载流导线有力的作用和牛顿第三定律的启发，希望制造一种新型的直流电动机。然而失败了。

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