Especially, when they learn the knowledge about sinusoidal steady -state circuit analysis, they feel more difficult.
特别是学到正弦稳态电路分析内容时，更是如堕五里云雾中。
Fourier Transform, the most classical signal processing analysis method, is ideal for the calculation of magnitude of sinusoidal signals in their steady state.
作为最经典的信号处理手段的傅立叶分析，对被分析信号的幅值变化相当的敏感。
The phasor analysis is a mathematical method analysing sinusoidal steady state circuit. It is essentially a style of transform.
相量法是分析正弦稳态电路的数学工具，实质上是一种变换方法。
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