The object of the study of library science is knowledge function, is collecting, putting in order, preserving and disseminating knowledge.
图书馆学的研究对象是图书馆的知识功能,是图书馆对知识的收集、整理、保存和传播。
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We use orderpreserving minimal perfect hash function to realize the search of terms library. It can not only upgrade the search speed, but also avoid sorting.