The Shield combines direct and oscillating current into a resonant transformer to provide increased levels of EMF protection.

盾构相结合的直接和振荡电流进入谐振变压器，以提供更高水平的电磁场的保护。

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The oscillatory current flowing in the coil produces an oscillating magnetic field.

流过线圈的振荡电流产生一个振荡磁场。

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This paper got the displacement current about a oscillating dipole and the equation of displacement current line and discusses the property of its electromagnet field.

本文通过计算得到了振荡偶极子周围的位移电流及位移电流线方程。

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Diodes are essential in radios to turn rapidly oscillating radio waves into a smoother direct-current signal that can power a speaker.

ECONOMIST: The middle age of the transistor