本文实现的排序算法是迭代法和数据库的直接查询法，它可有效实现将文献按引文被引频次排序，以及对文献的刊物来源的统计。
The arrangement calculation method is the direct inquiring ways in the data base, it can arrange the documents according to the quoted frequency and count the sources of the articles.
方法：采用直接测定法测得了样品的FTIR，并结合主成分分析法进行排序比较。
Method: Using fourier transform infrared spectrometer to record the characteristic spectra of eleven samples of Dendrobium, and to compare the spectra by PCA(principal component analysis).
方法：采用直接测定法测得了样品的FTIR，并结合主成分分析法进行排序比较。
Method: Using fourier transform infrared spectrometer to record the characteristic spectra of eleven samples of Dendrobium, and to compare the spectra by PCA(principal component analysis).
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