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The other name of the "three-dimensional thinking mode" is "integral thinking mode". The present-day library undertaking is a three-dimensional network crisscrossed with various factors which help each other forward and are implicative of each other. To apply the three-dimensional thinking to observe and study library science will surely grasp the whole of the study object. It should be the document information communication carried out by the library, the library undertaking and its related factors. 相似文献
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有关三角形的题目,常常需求解一些边、角大小或证明式子成立.对于这类题目,如果能掌握几种常用的辅助线添法,可以拓宽思路,化难为易,有效地找到解决问题的突破口.下面举例介绍几种常见的方法. 相似文献
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