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单词 epicycloid
释义

epicycloid

/ˌɛpɪˈsʌɪklɔɪd /
noun Mathematics
A curve traced by a point on the circumference of a circle rolling on the exterior of another circle.He also investigated caustic curves and in particular he studied these associated curves of the parabola, the logarithmic spiral and epicycloids around 1692....
  • The nephroid is the epicycloid formed by a circle of radius a rolling externally on a fixed circle of radius 2a.
  • These are the epicycloid, the epitrochoid, the hypocycloid and the hypotrochoid and they are traced by a point P on a circle of radius b which rolls round a fixed circle of radius a.

Derivatives

epicycloidal

/ˌɛpɪsʌɪˈklɔɪd(ə)l / adjective
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更新时间:2025/3/24 10:56:20