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The periodic table in degrades to the teaching of Chemistry
The periodic table in degrades to the teaching of Chemistry
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机译:周期表降级到化学教学
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摘要
Table period degrades to the teaching of chemistry this patent claim of privilege of invention is characterized essentially by a periodic table (a), whose function is to aid the teaching of Chemistry for students with visual disabilities or low vision, and said The product (a) of a 3D format.Reading Braille for identification of the elements belonging to the periodic table.
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