The relation of ray axis and optical axis is discussed by using the optical wave camber of biaxial crystal.
利用二轴晶的光波面，对光轴与光线轴的关系进行了研究。
It indicates that the direction of ray axis and optical axis is identical by discussing the uniaxial crystal at last.
最后对一轴晶进行了讨论，结果表明此时光轴方向与光线轴方向一致。
It indicates that the direction of ray axis and optical axis is identical by discussing the uniaxial crystal at last.
最后对一轴晶进行了讨论，结果表明此时光轴方向与光线轴方向一致。
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