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re shui ping nei xue wen duo
Author(s): 
Pages: 36-37
Year: Issue:  9
Journal: Required Reading for Junior Middle School Students

Abstract: <正>一只小小的热水瓶,给我们的生活带来了方便。如果对它的构造、特征、用途作一番分析,对我们的物理学习将不无益处。小小热水瓶,为何能保温?
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