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Frequency-domain method only needs to know frequency response, which can be obtained easily.
而频域法只需要知道各发电机的频域响应，从传递函数入手，就简单多了。
参考来源 - 大型互联电力系统动态等值发电机组参数辨识And then the paper employs estimation of transfer function in the frequency-domain signals which are converted from FFT. Finally, the paper fits modal parameters of system through the frequency-domain method.
对FFT变换得到的频域信号进行传递函数估计,然后用频域法拟合出系统的模态参数。
参考来源 - 斜拉拱桥模型试验模态分析及拉索对模态参数影响研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The finite-difference frequency-domain method with multifrontal algorithm is presented for two-dimensional cylinder scattering problems.
引入多波前算法，提出了结合频域有限差分法分析二维柱体的电磁散射问题。
The dissertation also presents the sensitivity of time domain method and frequency domain method to different kinds of error.
分析了时域法、频域法对不同类型误差的敏感程度。
The current widely used methods of seismic response analysis for soil layers in engineering are equivalent linearization frequency domain method which is based on FFT and iterative method.
工程上广泛应用的现行土层地震反应分析方法即为借助快速傅里叶变换和迭代法的等效线性化频域方法。
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