relative peak area

It established a chromatographic fingerprint method for fast and simple identification of Hypericum japonicum Thumb based on the relative retention time and relative peak area.

根据色谱指纹图谱各个谱峰的相对保留时间值α和相对面积Sr对色谱指纹图谱进行分析对比研究，建立一个快速、简易鉴别田基黄样品的色谱指纹图谱分析方法。

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Uranium isotopes and their daughters emit-rays and X-rays during the decay process, their peak area and relative efficiency can be calculated through spectrum analysis.

在衰变过程中，铀及其衰变子体放射出γ射线和特征X射线，通过能谱分析可以求出它们的峰面积和相对探测效率。

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the characteristic peaks in chromatograms were identified by comparing mass data with literatures. hierarchical clustering analysis was performed by spss based on the relative peak area ( rpa) of identified peak to germacrone in 18 samples.

通过质谱数据与文献对照检识出主要特征峰成分，并根据主要特征成分对18个样品进行SPSS聚类分析。

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