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词汇	epicycloid
释义	ep·i·cy·cloid AHD[ĕp'ĭ-sīʹkloid'] D.J.[ˌepɪˈsaɪˌklɔɪd]K.K.[ˌɛpɪˈsaɪˌklɔɪd]n.（名词）The parametric equations of a three-cusped epicycloid are:x = (a + b) cosθ - b cos a + b/bθy = (a + b) sinθ - b sin a + b/bθClarinda/Academy Artworks The curve described by a point on the circumference of a circle as the circle rolls on the outside of the circumference of a second, fixed circle.外摆线：一个动圆沿另一个定圆外侧滚动时，动圆圆周上一点的轨迹曲线 Related Forms继承用法ep'icycloidʹal AHD[-kloidʹl] （形容词）
随便看	alimonies alimony aline aline A-line alinement alinement aliphatic aliphatics Aliquippa aliquot aliquoted aliquoting aliquots alisander A list alit alit aliterate alive alive aliya aliyah aliyahs aliyas

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