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In this paper, Dielectric Spectroscopy (DS) was employed to analyze the oxidation degradation process of engine lubricating oil qualitatively and quantitatively compared with Fourier Transform Infrared Spectroscopy (FTIR). It was found that both DS and FTIR can directly obtain the degradation features from the spectral data. With the combination of DS and multivariate calibration (Partial Least Square...
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