The main analytical method of unsteady flow in pipelines includes frequency domain analysis and time domain analysis.
管道中非稳定流动的分析方法主要有频域法和时域法。
For analyzing marine underwater noise system by using multiinputs-output model analytical method of contribution of inputs to output in the sense of network and time domain was given.
本文通过对采用多输入输出模型的舰艇水下噪声系统的分析，给出时域处理的输入对输出贡献网络解的方法；
About theoretic calculation for lightning electromagnetic field, two analytical methods are raised, which are dipole method in time domain and time-varying field method in frequency domain.
在雷电电磁场的理论计算方面，提出了两种方法，即时域中的偶极子方法和频域中的时变场方法。
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