Near the characteristic peaks of laser Raman spectrograms of serums from the cancerous patients, the normal person′s serum has no Raman spectrogram characteristic peak.

在各类癌症患者血清的激光拉曼光谱图特征峰附近，正常人血清均没有拉曼光谱特征峰。

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This paper introduces a method which determinate the characteristic peak of IR through substructure searching, common substructure spreading, similarity index calculating.

采用子结构检索、公共子结构寻找和相似指数计算的方法研究了红外特征峰与对应子结构的相互关系。

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The result shows that the counts in characteristic peak regions increase as the source size increase, and its trends of change with radius of source is almost same as that of photon fluence.

结果表明特征能区的计数随源的半径增加而增加，并且其的变化趋势跟光子注量的变化趋势一致。

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