phymath01 格林公式与高斯公式
回答: "切向量"一階導數,计算机图形学教程 - Google 图书结果,方向向量称为曲线 的切向量,在p的一个切向量就是一个一阶微分算
由 marketreflections
于 2011-11-16 15:57:38
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