diffractive optical device 基本例句 衍射光学元件 These errors have effects on diffractive efficiencyof DOE.这些制作误差对衍射光学元件的衍射效率都有影响。 The proposed method is of great significance for fabrication of high-stability diffractive optical elements.该方法对于线宽稳定度较高的衍射光学元件制作具有重要价值。