导函数

In mathematical terms, the marginal physical product is given by the first derivative of the production function, ie.

用数学的术语来表示，边际产量是生产函数的一阶导数，即

A Use the first derivative to find the critical points and to find out where the graph is increasing and decreasing.

利用函数的一阶导数找出图形的临界点，判断图形的增减性

The equation is deduced by introducing a shape functioninto Flory's theoretical equation of intrinsic viscosity.

这一方程是在Flory的特性粘数理论方程中引入一个形状函数而导得的。

In Chapter 3, we study the semilocal convergence for the method appeared in Chapter 2 under Lipschitz continuous condition of the second Frechet derivative, and get the corresponding error estimation by majoriz-ing function technique. And also, an application of the theorem to a non- linear equation is given.

在第三章中，研究了复合型Newton-Steffensen迭代方法在算子的二阶导数满足Lipschitz连续条件时的半局部收敛性，并利用优函数技巧得到了其在该条件下的误差估计，最后给出了这个定理的一个应用。

Through theoretic analysis and numeric calculation, it studies kinetic characteristics and pollutant transform laws of the 2nd Songhua River Water; emphasizes parametric recognition for Frechet derivative regularization based on Dobbins-Camp BOD-DO coupled model in water quality simulation and how to make estimation.

通过理论分析和数值计算，研究二松江江水运动特性和污染物转化规律；重点研究了水质模拟中基于Dobbins BOD-DO耦合模型的Frechet导数正则化参数识别法进行估计，确定目标函数后，通过优选技术确定水质参数。

The whole inverse problem may be viewed as a two-stage optimal procedure, and the optimal algorithm based on gradient, such as BFGS algorithm, is adopted as the gradient of the objective functions which may be derived by using Frechet differential.

由于两次优化的目标函数的导数都是可求得的，因此采用基于梯度的优化算法，如Broyden-Fletcher-Goldfard-Shanno变尺度算法。

The product of the derivative of a function containing one variable multiplied by the increment of the independent variable .

微分用独立变量乘以含有一个度量的函数，然后对其求导所得的结果

Vector partial differential operator ; Dyadic Green function ; Heteromophic waveguide ; Cutoff frequency

矢量偏微分算子；并矢格林函数；异形波导；截止频率

Then wehave two important theorems about the lifting of the group of automorphisms and thelifting of derivations of A are given by the function of uce , then to prove them.

然后，利用uce函数给出了关于A的自同构群的提升和导子的提升的两个重要定理并加以证明。

Guide magnet small displacement influence is passed to change on distribution of carity magnetic field. The relationship between Hall voltage and displacement function is determined.

通过导磁铁微移动影响腔体磁路变化确定了霍尔电压与位移函数的关系，计算出了K值。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。