This paper expounds the quality and knowledge structure that subject librarian must possess to meet the needs of university library's serving the teaching and scientific research.
阐述了学科馆员所必须具备的素质和知识结构，以满足高校图书馆服务教学科研的要求。
Mode of thinking, scientific knowledge, and values are core elements of the cognitive structure of a subject.
主体的认知结构的核心要素是思维方式、科学知识、价值观念。
The fractal structure research of space-time distribution of earthquakes provides some new knowledge to this subject.
地震时空分布的分形结构研究为此提供了新的科学认识。
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