Article
科學常識 袖珍留聲機 - Common knowledge in science, a pocket gramophone

Column title: 科學常識 - General scientific knowledge
Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: invention, technology,

Image
[No caption] -

Subject matters: Ornament,
Medium: Line drawing

Function: Unrelated to Article/Ad

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(上圖) 開啓時之內容 - (the picture above) the contents when one opens it

Subject matters: Illustrative diagram,
Medium: Photograph-Monochrome

Function: Related to Article/Ad

Keywords: electric equipment,

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(左圖) 關閉時之外觀 - (the picture left) the appearance when one closes it

Subject matters: Illustrative diagram,
Medium: Photograph-Monochrome

Function: Related to Article/Ad

Keywords: electric equipment,

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