It is well known that a light spot of sub-wavelength will diverge in all directions.
众所周知，一个次波长光斑将向各个方向发散。
Study on optical sub-wavelength structure has been a subject of great interest in recent years.
光学亚波长结构研究是受国际重视的研究前沿。
Study on optical sub-wavelength structure has been a subject of great interest in recent years.
光学亚波长结构研究是受国际重视的研究前沿。
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