| 单词 | hypotrochoidal |
| 释义 | > as lemmashypotroˈchoidal hypotroˈchoidal adj. of the form of, or pertaining to, a hypotrochoid. ΘΚΠ the world > relative properties > number > geometry > curve > [adjective] > other caustic1728 hypotrochoidal1843 hodographic1847 Pippian1857 tetrazomal1867 trizomal1867 three-bar1875 sinusoidal1878 1843 Penny Cycl. XXV. 283/1 When the convexities are opposed, the trochoidal system is called epi-trochoidal, and when concavity fits convexity, hypo-trochoidal. < as lemmas |
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