Epicycle

[episaikl]

解釋/意思:

(noun.) a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid.

校對:西蒙--From WordNet

解釋/意思:

(n.) 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.

(n.) A circle which rolls on the circumference of another circle, either externally or internally.

整理:李奥娜

解釋/意思:

n. a circle having its centre on the circumference of a greater circle on which it moves.—adj. Epicy′clic.—n. Epicy′cloid a curve described by every point in the plane of a circle moving on the convex circumference of another circle.—adj. Epicycloi′dal.

校對:斯坦顿