立足于图书馆外借的数据统计，分析图书入藏时间与外借存在的关系、存在何种关系。在对超过8年的数百万条图书流通日志进行统计后，总结了普通中文图书的外借利用情况随图书入藏时间变化的规律，为图书入藏时间与外借情况的关系提供了一个定量的实证分析。%Based on the data statistics of the books borrowed from the library, this essay analyzes the relationship be- tween book borrowing and the collection time. After conducting a statistical analysis of millions of book circulation diaries over8 years,it also summarizes the law about how the borrowing of ordinary Chinese books varies with the collection time, which serves as a quantitative empirical analysis of the relationship between book borrowing and the collection time.
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