geometric instability

例句：

1. 1.The geometric instability of the structure caused it to collapse.
   结构的几何不稳定性导致它倒塌。
2. 2.The engineer analyzed the geometric instability of the bridge and proposed a solution.
   工程师分析了桥梁的几何不稳定性并提出了解决方案。
3. 3. The geometric instability of the material is a concern for designers.
   材料几何不稳定性是设计师们关注的问题。