Article
飛行機的進步 - The development of the airplane

Column title: 家庭俱樂部 - Family club
Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: science, military, Germany, airplane,

Persons:
谷青 Gu qing (Author)

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Article
飛行器發明小史 - A short history of the invention of the airplane

Column title: 家庭俱樂部 - Family club
Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: science, airplane,

Persons:
秋 Qiu (Author)

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