Using the characteristic of refractive index are smaller than 1 in the reststrahlen band,we can produce photonic crystal having forbidden band in the middle infrared and far infrared.
由此可知利用材料在剩余射线
内折射率小于1
特性，我们可以制备
外区和
外区存在禁光子晶体。
外线Using the characteristic of refractive index are smaller than 1 in the reststrahlen band,we can produce photonic crystal having forbidden band in the middle infrared and far infrared.
由此可知利用材料在剩余射线内折射率小于1特性，我们可以制备外区和外区存在禁光子晶体。
It also emits natural phytocide to keep air fresh, and keep people's mind clear, and emit the far infrared ray to improve the blood circulation to relieve the fatigue.
同时其释放外线能促进人体血液循环，消除疲劳。
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