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词汇
heptagonal
释义
hep·tag·o·nal
英hep'tæɡənəl美hep'tæɡənəl
基本
记法
adj.
七角的
⁴²
;七边形的
⁵⁸
钱博士hept七+a连接字母+gon角-al…的形容词后缀⇒七角的
词根hept-七来自希腊语。它和拉丁词根septem-及日耳曼单词seven七最终都源自原始印欧语词根*septm-七。词根gon-膝,引申为角,因为膝部能够弯曲形成夹角来自希腊语。它和拉丁词根genu-膝及日耳曼单词knee膝最终都源自原始印欧语词根*genu-1膝。
hept七+a连接字母+gon角-al…的形容词后缀⇒七角的。
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更新时间:2025/3/16 7:14:27