英文字典中文字典Word104.com
|
epicycle n. 本輪 本輪 epicycle n 1: a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid Epicycle \Ep"i*cy`cle\, n. [L. epicyclus, Gr. ?; 'epi` upon ?
circle. See {Cycle}.] 1. (Ptolemaic Astron.) A circle, whose center moves round in the circumference of a greater circle; or a small circle, whose center, being fixed in the deferent of a planet, is carried along with the deferent, and yet, by its own peculiar motion, carries the body of the planet fastened to it round its proper center. [1913 Webster] The schoolmen were like astronomers which did feign eccentrics, and epicycles, and such engines of orbs. --Bacon. [1913 Webster] 2. (Mech.) A circle which rolls on the circumference of another circle, either externally or internally. [1913 Webster] epicyclic
請選擇你想看的字典辭典:
|
安裝中文字典英文字典查詢工具!
英文字典中文字典相關資料:
|
中文字典-英文字典 2005-2009
|中文姓名英譯,姓名翻譯 |简体中文英文字典