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hypotrochoid

/,haipә'trәukɔid/

📖 中文释义

[机] 内转迹线

📘 English Definition（英文释义）

n. A curve, traced by a point in the radius, or radius
produced, of a circle which rolls upon the concave side of a fixed
circle. See Hypocycloid, Epicycloid, and Trochoid.

← hypotrochanteric hypotrophia infantum →