In the face of changes in the informational environment, the traditional course of medical library literature retrieval utilization meets huge great challenges.
面对信息环境的改变，医学图书馆传统的文献检索利用课程面临严重挑战。
The informational source is also summed up and concluded, thus providing convenience and basis for the further study of laser chemistry, information storage and retrieval.
对有关情报源进行了归纳和总结，为激光化学的深入研究和文献检索提供了方便和依据。
The informational source is also summed up and concluded, thus providing convenience and basis for the further study of laser chemistry, information storage and retrieval.
对有关情报源进行了归纳和总结，为激光化学的深入研究和文献检索提供了方便和依据。
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