Article
馬得利電台 - Radio Madrid

Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: science,

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Article
科學常識 短波無線電發明史 - Common Knowledge in Science. The History of the Invention of Shortwave Radio

Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: science,

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Image
[No caption] -

Subject matters: Ornament,
Medium: Line drawing

Function: Unrelated to Article/Ad