介绍了生物活性多肽定量构效关系（QSAR）中化学结构描述符和建立数学模型统计方法的研究概况。
This paper introduced the study general situation of the chemical structure descriptors and statistical method of mathematical modeling in bioactivity polypeptide QSAR research.
本文介绍了近年来彗星轨道统计研究的概况，以及它在彗星起源研究中的应用。
This paper briefly introduces the recent situation in the statistics of comet orbits research as well as its use in the study of comet origin.
介绍了PI数据库的一些特点及在PI数据库的基础上开发的统计分析系统的概况。
Some characteristics of PI database are primarily introduced, as well as the general situation of statistical analysis system developed on the basis of PI database.
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