hard elastic region

例句：

1. 1. The hard elastic region is crucial for the stability of the structure.
   硬弹性区域对于结构的稳定性至关重要。
2. 2. The material has a hard elastic region that can stretch and recover quickly.
   这种材料有一个硬弹性区域，可以快速地拉伸和恢复。
3. 3.The hard elastic region is responsible for absorbing shocks and vibrations.
   硬弹性区域负责吸收冲击和振动。