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本文根据双轴晶体的锥形折射效应，提出了动态外锥折射以及一种实现外银折射的新方法。选用KNbO3晶体进行实验，不仅观察到外银折射，而且实现0至8度范围的动态锥折射。
In this paper, based on the birefringent refraction effect of biaxial crystals, a new method of dynamic outer cone refraction and a method of realizing outer silver refraction are proposed. Experiments using KNbO3 crystals not only reflected the refraction of the outer silver but also achieved dynamic cone refraction in the range of 0 to 8 degrees.