单词	Velocity
释义	Velocity where is the Position Vector and is the derivative with respect to time. Expressed in terms of theArc Length, where is the unit Tangent Vector, so the Speed (which is the magnitude of the velocity) is See also Angular Velocity, Position Vector, Speed
随便看	Spread (Link) Spread (Tree) Spun Knot Squarable Square Square Bracket Polynomial Square Cupola Square Curve Square Cutting Squared Squared Square Square-Free Squarefree Butterfly Catastrophe Butterfly Curve Butterfly Effect Butterfly Fractal Butterfly Polyiamond Butterfly Theorem Bäcklund Transformation Bézier Curve Bézier Spline C C* Cable Knot

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