But in the application of domestic scroll compressor time also is not too long, the use of fault analysis in the process are few.
但是涡旋压缩机在国内的应用时间还不是很长，对其使用过程中故障的分析还不多。
These analysis method in fault diagnosis process can play an important role, but Fourier analysis method is only suitable for analysis of the continuous, the steady time signal.
这些分析方法在故障诊断过程中起到了重要的作用，但傅立叶分析方法只适合于分析连续的、平稳的时域信号。
Then the time domain analysis methods and frequency domain analysis methods which are frequently used for fault diagnosis have been discussed.
其次论述了常用的故障诊断方法，即时域分析方法和频域分析方法。
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