internal time varying perturbations

例句：

1. 1. The internal time variations inthe data were significant.
   数据中的内部时间变化是显著的。
2. 2. The team'sperformance was affected by the internal time variationsin their equipment.
   团队的表现受到了他们设备内部时间变化的影响。
3. 3. The researcher foundthat the internal time variations in the materialcould be used to predict its behavior.
   研究者发现材料的内部时间变化可以用来预测其行为。