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File:勾股容圆.JPG

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中文：作者逝世及作品发表已超过70年，已进入共有领域。
Date
Source 《测圆海镜分类释术》
Author 顾应祥

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current00:07, 30 October 2009Thumbnail for version as of 00:07, 30 October 2009422 × 631 (28 KB)Irrons (talk | contribs){{Information |Description={{zh|1=作者逝世及作品发表已超过70年，已进入共有领域。}} |Source=《测圆海镜分类释术》 |Author=顾应祥 |Date=1778 |Permission= |other_versions= }} Category:Mathematical art [[Category:Mathema

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