This column features an overview of the Institute for Scientific Information's (ISI) Journal Citation Reports (JCR) database.

这个专栏以美国科学情报研究所（ISI）的期刊引用报告（JCR）数据库的一个概述为特色。

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According to the data in journal Citation Reports 2002 (JCR2002) declared by American ISI, the paper combined the agricultural engineering journals accepted by it.

利用美国ISI发布的2002年度期刊引文报告(JCR2002)数据，对所收录的农业工程学科的期刊进行了汇总介绍。

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Based on the data of 6015 journals collected in the Journal Citation Reports (JCR), the author investigates the characteristics of 5-Year Impact Factor (IF5) with the method of statistical study.

使用期刊引证报告（JCR）6015种期刊数据，以统计学方法探索性地分析5年期影响因子IF5的特点。

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Based on the data of 6015 journals collected in the Journal Citation Reports (JCR), the author investigates the characteristics of 5-Year Impact Factor (IF5) with the method of statistical study.

使用期刊引证报告（JCR）6015种期刊数据，以统计学方法探索性地分析5年期影响因子IF5的特点。

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