微小的温度变化可能对实验数据产生扰动。

Small temperature variations can cause ___perturbations in the experimental data.

最近的工作压力给他带来了明显的精神困扰。

Recent work stress has caused noticeable ___perturbations in his mental state.

月球轨道的微小扰动是由地球和其他行星的引力引起的。

The small ___perturbations in the Moon's orbit are caused by the gravitational pull of Earth and other planets.