diaxial crystal

例句：

1. 1. The diaxial crystals were found to have a unique structure.
   发现这些双轴晶体具有独特的结构。
2. 2.The diaxial crystals are used in various applications such as electronics and optics.
   双轴晶体被用于各种应用，如电子和光学领域。
3. 3.The diaxial crystals exhibit interesting optical properties that make them useful for many applications.
   双轴晶体展现出有趣的光学性质，使其在许多应用领域中非常有用。