释义 |
ep·i·cy·cle AHD[ĕpʹĭ-sī'kəl] D.J.[ˈepɪˌsaɪkəl]K.K.[ˈɛpɪˌsaɪkəl]n.(名词)- In Ptolemaic cosmology, a small circle, the center of which moves on the circumference of a larger circle at whose center is Earth and the circumference of which describes the orbit of one of the planets around Earth.本轮:在托勒密宇宙论中的一个小的圆周,其中心在以地球为中心的一个更大的圆周上运动,其轨迹为环绕地球运行的行星的轨道
- Mathematics A circle whose circumference rolls along the circumference of a fixed circle, thereby generating an epicycloid or a hypocycloid.【数学】 周转圆:一个围绕着另一个固定圆周长滚动的圆,从而产生圆外旋轮线或圆内旋轮线,即外摆线或内摆线
- Middle English epicicle 中古英语 epicicle
- from Late Latin epicyclus 源自 后期拉丁语 epicyclus
- from Greek epikuklos 源自 希腊语 epikuklos
- epi- [epi-] epi- [前缀,表“在…之间”]
- kuklos [circle] * see k wel- 1kuklos [圆周] * 参见 k wel- 1
ep'icyʹclic AHD[-sīʹklĭk, -sĭkʹlĭk] (形容词) |