That means a vector that is at every point of the curve perpendicular to the curve and has length one.

也就是，曲线每一点上,垂直于曲线，模长为1的向量。

youdao

In this paper, a numerical method is presented for nearly arc length parameterization of parametric curve.

讨论参数曲线近似弧长参数化的数值方法。

youdao

The results showed that the change patterns of spacer length, ramet density, branching intensity, and branching Angle of Duchesnea indica were in a quadratic curve when the elevation increased.

结果表明，随着海拔的增加，间隔子长度、分株密度、分枝角度和分枝强度呈二次曲线变化。

youdao

Right now, we have a normal yield curve, with interest rates rising with length of maturity.

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