stiffness of coupling

例句：

1. 1. The design ofthe coupling stiffness is crucial for the stability of the system.
   耦合刚度的设计对系统的稳定性至关重要。
2. 2. In the analysis of the system dynamics, the stiffness of the coupling is an important factor to consider.
   在系统动力学分析中，耦合刚度是一个需要考虑的重要因素。
3. 3. The stiffness of the coupling affects the performance of the system, and needs to be optimized.
   耦合刚度影响系统的性能，需要优化。