icosahedral phase

例句：

1. 1. Thecrystal structure of the material is known to be icosahedral.
   这种材料的晶体结构已知为多面体。
2. 2.Icosahedral structures are often used in materials science for their unique properties.
   多面体结构在材料科学中常用，因为它们具有独特的性质。
3. 3. In the study of crystal growth, understanding the icosahedral phase is crucial for predicting the final shape of the crystal.
   在研究晶体生长时，理解多面体相对于预测晶体最终形状至关重要。