perturbationn.扰动(微扰；波动；破坏；摄动)perturbation equilibrium摄动平衡点perturbation growth rate扰动增长率perturbation compensation扰动补偿perturbation theory of DFT密度泛函微扰论perturbation linearization摄动线性化perturbation approximation微扰近似perturbation of eigenspaces特征空间的摄动perturbation finite element摄动有限元perturbation learning method扰动学习法perturbation and observation扰动观察法