Article
避雷簡法 - An easy method of lightning protection

Column title: - no column name
Subject matters: 新知 - new knowledge,

Keywords: radio, science,

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Article
夏天的收音 - The reception in summer

Column title: - no column name
Subject matters: 文章 - essay,

Keywords: radiocommunication, radio,

Notes:
"夏天來了。對於遠程收音的愛好者。要減少許多的樂趣。"
......
"無綫電在夏天有一種特殊的用途。便是戶外收音。"
......

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Image
[No caption] -

Subject matters: Ornament,
Medium: Line drawing

Function: Unrelated to Article/Ad