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。
2
The hopping conduction in energygap of amorphous semiconductors at low temperature is explained by calculating hopping probability when an electron hops from one defect center to the other.
通过计算电子由一种缺陷中心向另一种缺陷中心的跳跃几率，解释了非晶半导体中的低温带隙跳跃导电问题。
3
Low applied voltage, low conductivity of solution and small discharge gap are favorable for the production of hydrogen peroxide per unit electric energy.