The photorefractive grating is phase - shift for high frequency of external applied alternating field.

当外加交变电场频率较大时光折变光栅是相移型的.

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It was showed that alternating field could change the morphology of CaCO 3 crystal.

表明交变电磁场能够改变碳酸钙晶体的形态,具有比较显著的除垢效果.

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Direct conversion of electric energy to light by a solid phosphor subjected to an alternating field.

说明有关通过交变电磁场来实现的传输(无线电波、光).

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