dynamic mechanical behavior

例句：

1. 1. Thebehavior of the system is influenced by externalfactors.
   系统的动态行为受到外部因素的影响。
2. 2. Themechanical behavior of the material under stress iscrucial for its durability.
   材料在应力下的行为对它的耐用性至关重要。
3. 3. The dynamicmechanical behavior of the material can be analyzedusing finite element method.
   使用有限元方法可以分析材料的动态机械行为。