unicline

例句：

1. 1.The rock formation is characterized by its monoclinic crystal structure.
   这种岩石的形成特点是其单斜晶结构。
2. 2. The unicline mineral has a unique optical property that distinguishes it from other minerals.
   这种矿物具有独特的光学性质，与其他矿物不同。
3. 3.The unicline structure is stable under high pressure and temperature conditions.
   这种单斜结构在高压和高温条件下是稳定的。