The bigger the refractive index ratio of two primitive dielectrics of one-dimensional photonic crystals is,the narrower the transmission band is.是什么意思_The bigger the refractive index ratio of two primitive dielectrics of one-dimensional photonic crystals is,the narrower the transmission band is.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句