Abstract: Recently, the amount of Enclosing Disk with Book in college library is increasing continuously.

摘要：目前，高校图书馆随书附盘数量正在不断的增加。

youdao

Abstract: Recently, the amount of Enclosing Disk with Book in college library is increasing continuously.

摘要：目前，高校图书馆随书附盘数量正在不断的增加。

youdao