1. 一阶导数：建立了快速测量茶多酚中总儿茶素含量的近红外光谱定标模型.将48份茶多酚样品组成定标样品集,在1000-2500nm(4000-10000cm^-1)的近红外漫反射光谱为定标波长范围内,光谱经一阶导数(First derivative)、二阶导数(Second derivative)、标准归一化(Standard normal variate,

2. 一阶导数 second 二阶：Composite function 复合函数 | First derivative 一阶导数 second 二阶 | Infinite 无限多种

3. 一阶导数Btu中国学习动力网：first approximation 首近似值Btu中国学习动力网 | first derivative 一阶导数Btu中国学习动力网 | first order differential equation 一阶微分方程Btu中国学习动力网

4. 一阶导数无忧雅思网：Finite-sample, 有限样本无忧雅思网[I @,yY5yUB9@| | First derivative, 一阶导数 无忧雅思网*}x:@#K/w(@.H5B:k | First principal component, 第一主成分无忧雅思网UY NJ AA7C9l2EF

noun

1. the result of mathematical differentiation
the instantaneous change of one quantity relative to another
df(x)/dx

Synonym: derived functionderivativedifferential coefficientdifferential