1) first-order partial derivative
一阶偏导数
1.
The method of the undetermined coefficient dealing with a first-order partial derivative is defined and presented.
介绍了待定系数法的定义及其基本思想,给出了该方法在处理热力学一阶偏导数中的应用及热力学关系式的证明和推导。
2) First derivative
一阶导数
1.
Methods:First derivative spectrometry was established.
方法:采用一阶导数分光光度法,测定波长为275nm和317nm。
3) First-derivative
一阶导数
1.
Determination of the content of allantoin in allantoin-vitamin E cream by zero-crossing first-derivative spectrophotometry;
零交一阶导数分光光度法测定尿囊素维E乳膏中尿囊素含量
4) first order derivative spectrophotometry
一阶导数
1.
METHODS A first order derivative spectrophotometry method was used.
方法 用一阶导数分光光度法测定盐酸环丙沙星软膏的含量 ,同时用强化试验、加速试验、长期试验等方法对其稳定性进行研究。
5) first order derivative
一阶导数
1.
Method: The first order derivative spectrophotometry was used to determine the chloramphenicol without separation.
采用一阶导数分光光度法不经分离直接测定氯霉素的含量,检测波长为299nm。
2.
Method: The content of fluconazole in gel was measured by first order derivative spectrophotometry.
方法:采用一阶导数分光光度法进行含量测定。
3.
A method of proof using only unary function and first order derivative is given to two inequalities of average value, and an unified proof is given to a more general equality of average.
对两个平均值不等式 ,给出只用一元函数一阶导数的证明方法 。
补充资料:偏导数
偏导数 partial derivative 二元函数z=f(x,y)沿坐标轴方向的方向导数(或沿坐标轴方向的变化率)。即把z=f(x,y)中的一个自变量y看作常数,于是z=f(x,y)就成为关于x的一元函数,给x以改变量Δx,则有z关于x的(偏)改变量Δxz=f(x+Δx,y)-f(x,y),如果极限(存在且有限,就称此极限为二元函数 z =f( x,y )在 P(x,y)点关于x的偏导数,记作,或(x,y),类似地有 说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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