单词	osculating circle
释义	osculating circle noun : a circle which is tangent to a curve at a given point, which lies in the limiting plane determined by the tangent to the curve and a point moving along the curve to the point of tangency, which has its center situated on the normal to the curve at the given point and, also, on the concave side of the projection of the curve onto the limiting plane, and which has a radius equal to the radius of curvature Word History First Known Use 1816, in the meaning defined above
随便看	jumpilier jumpiliest jumpiness jumpinesses jumping jumping (on) jumping at jumping bean hemispheroid hemispheroidal hemispheroids hemistich hemistichal hemistichs hemisymmetrical hemisymmetry hemitripteri hemitripteruses hemitripterusses hemitropal hemitrope hemitropes hemitropic hemitropies hemitropism

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