For one-dimensional Photonic Crystals, an analytic expression for the band edges as a linear function of the pressure is given using electromagnetic theory.

利用电磁场理论，推导发现了压力与一维光子晶体光带隙边界之间存在线性对应关系。

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The theme of this dissertation is to research the electromagnetic characteristics and application of photonic crystals.

本论文主要研究了光子晶体的电磁特性和应用。

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Based on the piezoelectric effect, a hypothesis which electromagnetic emissions were yielded by charge movements resulted by destroying piezoelectric crystals during rock fracture was established.

基于晶体的压电效应，提出岩石破裂时出现的电磁脉冲现象是由压电晶体破坏导致瞬间的电荷运动而产生的假说。

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With each changing minute, an electrical pulse generates an electromagnetic field that changes the position of the crystals on the face of the watch, to elegantly display the passing time, while producing a distinctive sound unique to the Phosphor Reveal digital watch line.

ENGADGET: Phosphor's Reveal wristwatch uses Swarovski crystals to tell time, bedazzle you