Wide-band & wide-angle 宽带宽角特性
Wide-band & wide-angle characteristic is a significant topic in electromagnetic field.
宽带宽角特性是电磁研究领域具有重要意义的课题。
Although the energy loss of ordinary multi-layer photonic crystal structures is low, the band gap is usually limited, there is also wide-wide Angle high anti-band hard.
普通多层膜系结构光子晶体的禁带内能量损失较低，可是禁带宽度通常有限，而且出现较宽的全角高反带很难。
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