perturation method的用法和樣例：
例句
- Characteristics of omni-directional dielectric rod grating leaky antennas with arbitrary profiles are investigated by an improved perturbation method.
摘要用改進微擾法分析了任意曲線形狀圓柱形介質柵全向天線的輻射特性。 - The ground state energy of the magnetopolaron is derived by using a linear combination operator and the perturbation method.
採用線性組合算符和微擾法，導出了半導體量子點中磁極化子的基態能量。
