地震仪删除看法(英文)PPT课件

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Zhang Heng seismograph(张衡地震仪)
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Ministry of Education has removed the content of the seismograph out of rigorous and historical attitude.
close attention and heated arguments among people
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supporter
Seismograph is not a real cultural relic, the model is just a manufacture made by us according to Later Han(后汉书).
Textbook should keep a rigorous and historical attitude. Things that are questionable should not be put in textbooks.
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关键词：ppt课件 ppt MANUFACTURE historical Attention