epitrochoid

epitrochoid读音音标

英 [epɪ\'trəʊkɔɪd]

美 [epɪ\'troʊkɔɪd]

epitrochoid意思解释

n.

外旋轮线；

英英释义

An epitrochoid ( or ) is a roulette traced by a point attached to a circle of radius r rolling around the outside of a fixed circle of radius R, where the point is a distance d from the center of the exterior circle.