doubly refracting crystal

例句：

1. 1. The double refracting crystal is used in the manufacturing process of optical instruments.
   双折射晶体用于制造光学仪器的过程。
2. 2. The birefringent crystals are sensitive to temperature changes and can be used to detect changes in the environment.
   双折射晶体对温度变化敏感，可用于检测环境变化。
3. 3. The double refracting crystal has been found to have unique properties that make it useful for a variety of applications.
   双折射晶体被发现具有独特的性质，使其在多种应用中具有用途。