Analysis with polarizing microscope and DSC show that 1 has liquid crystal property while 2 has not.
通过偏光显微镜和DSC分析，1具有液晶性能，而2没有液晶性能。
The experiment of observing the color changes of electrically controlled birefringence of liquid crystal cell with different applied voltage with polarizing microscope was presented.
介绍液晶电控双折射知识，给出在偏光显微镜下观测液晶盒的颜色随外加电压变化的实验。
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