To master a foreign language in the information query, document retrieval and use of modern information technology to obtain information about the basic approach;
掌握中外文资料查询、文献检索及运用现代信息技术获取相关信息的基本方法；
Experimental results show that this algorithm has higher precision of document retrieval and faster computation speed compared with conventional query optimization algorithms.
实验结果表明，该算法在查询精度和计算速度上均优于常用的查询优化技术。
Establishing the theoretical basis of the interactive strategy between e-learning and face-to-face study in the teaching of physics in senior high school through document retrieval and survey.
通过文献检索和现状调查，构建高中物理“在线学习”和“课堂学习”互动策略的理论基础。
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