The relative articles in the database were sorted by different categories, such as "research categories", "publishing year" and "research drug".
对数据库中相关文献进行如“研究类型”、 “发表年代”、 “涉及药物”等分类项归类。
Firstly, the tuples of database is divided into different groups and sorted to change a disordered state between tuples into a relative ordered state.
首先通过对数据库中的元组进行分组和排序，将元组之间的无序状态变为相对稳定的有序状态。
Firstly, the tuples of database is divided into different groups and sorted to change a disordered state between tuples into a relative ordered state.
首先通过对数据库中的元组进行分组和排序，将元组之间的无序状态变为相对稳定的有序状态。
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