- Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.
根据此参数可以判断一块宝石，是单轴晶体还是双轴晶体，是正趋光性还是负趋光性。
- The reflection of ordinary light on the internal boundary surface of the uniaxial crystal is studied.
研究了寻常光在单轴晶体内表面上的反射规律。
