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bn:00027457n
Noun Concept
Categories: 位相幾何学, 円 (数学), 数学に関する記事
JA
円板  ディスク  円盤  開円板  クローズドディス
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薄く平たい円盤 Japanese Open Multilingual WordNet
English:
mathematics
geometry
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薄く平たい円盤 Japanese Open Multilingual WordNet
各種幾何学における円板(えんばん、英: disk; disc と綴ることもある)は、平面上で円で囲まれた有界領域である。 Wikipedia
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