The refractivity indicatrix is a new optical indicatrix of crystal.
折射度指示体是晶体的一个新的光性指示体。
The crystal axes and the principal stress axes are obtained from the optical indicatrix axes manually by turning the projection diagram as usual.
以往是通过手工转图由光率体主轴获取晶轴和应力主轴的，把手工操作变为计算机运算和成图，是一个重要的附加课题。
The crystal axes and the principal stress axes are obtained from the optical indicatrix axes manually by turning the projection diagram as usual.
以往是通过手工转图由光率体主轴获取晶轴和应力主轴的，把手工操作变为计算机运算和成图，是一个重要的附加课题。
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