perturbative
/pəˈtɜːbətɪv/relating to or involving the deviation of a system, moving object, or process from its regular or normal state or path."perturbative quantum gravity"
adjective [原级] 使混乱的；扰乱性的
Using the perturbative method the asymptotic solution of the corresponding model is obtained. 利用摄动方法求出了相应模式的渐近解。
