The negative refraction in uniaxial crystal is different from that in left-handed materials, it is one special property of the uniaxial crystal, and the other one is negative reflection.
单轴晶体中的负折射现象和左手材料中的负折射有着本质上的区别，它是单轴晶体的一种特殊属性。
The refractive indices at 12 wave lengths in the visible region were measured with the minimum deviation method, showing that KABO is a negative uniaxial optical crystal with moderate birefringence.
用最小偏离法测试了可见光区十二个波段处的晶体折射率，结果表明KABO晶体属负单轴晶，具有适中的双折射率。
The refractive indices at 12 wave lengths in the visible region were measured with the minimum deviation method, showing that KABO is a negative uniaxial optical crystal with moderate birefringence.
用最小偏离法测试了可见光区十二个波段处的晶体折射率，结果表明KABO晶体属负单轴晶，具有适中的双折射率。
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