second-derivative spectra

基本解釋

Moreover, there were certain differences in second derivative near-infrared spectra of the two samples.
兩者薄層色譜與近紅外二階導數光譜也略有不同。
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The spectra were analyzed to calculate relative intensity ratio, bandwidth, as well as the second derivative spectra and Multi-peak Gauss fit of fluorescence spectrum.
本文計算了熒光的相對強度比、半值寬度，對熒光光譜做了二階導數，以及譜圖分離等處理，對熒光光譜數據作了深入細致的分析。