smectic compound

例句：

1. 1. The smectic phase is a unique property of certain materials that can change shape when heated.
   某些材料的smectic相是一种独特的属性，加热时可以改变形状。
2. 2. In the smectic phase, the molecules are arranged in a layered structure.
   在smectic相中，分子以层状结构排列。
3. 3. Smectic compounds have been used to create displays with high contrast and low energy consumption.
   smectic化合物被用于制造具有高对比度和低能耗的显示设备。