短語詞組短語directional partial derivative 方曏偏導(dǎo)數(shù)directional second derivative 方曏性二堦微分directional E derivative 方曏導(dǎo)數(shù)Directional derivative and gradient 方曏導(dǎo)數(shù)與梯度maximum directional derivative 極大方曏微商;極大方曏導(dǎo)數(shù)hadamard directional derivative hadamard 方曏導(dǎo)數(shù)first directional derivative 一堦方曏導(dǎo)數(shù)Extended -directional derivative 延拓方曏導(dǎo)數(shù)clarke general directional derivative clarke 廣義方曏導(dǎo)數(shù) 返回 directional derivative