n.擾動(微擾；波動；破壞；攝動)
The effects of WOB fluctuation of drill string on the wellbore trajectory are analyzed by using stochastic finite element method and perturbation equation. 借助隨機(jī)有限元方法和攝動方程初步分析了鉆壓波動對井眼軌跡的影響。
