查询词典 partial derivative

Finally, optical flow estimation is performed based on the least square method and partial derivative estimation.

然后通过最小二乘法并结合图像的偏导数进行光流场估计。

Therefore, a partial derivative formulation about displacement and parameter in finite element evaluation was derived in a closed form.

并提出了在参数敏感性分析中应考虑位移值的影响，建议采用位移加权的方法来解决这一问题。

The mathematical model between position error and north seeking error is gotten through error theory and partial derivative principle.

运用误差理论和偏导数原理，推导出转位误差与寻北误差二者之间的关系模型。

Given equation (1), then taking the partial derivative yields

由于方程（1），然后到偏导数，得到："/页"

Through calculating the partial derivative to the power loss of the transformer, economical operating area of a single transformer is deduced.

通过对配电变压器的功率损耗值取偏导，得出了单台变压器的经济运行区。

Numerical calculation of Green's function and its partial derivative plays an important role in the water dynamics.

未经语际同意，其它公司或个人对此文的转载行为，语际将保留起诉权力。

In general a partial derivative of f with respect to a variable q is the ratio of df to dq when certain other variables are held fixed.

一般来说函数f对某一特定变数q的偏微分所代表的是在其余变数固定的情形之下，df对dq的比值。

When we use boundary element method to solve problems of fluid structure interaction, large amount of calculation of Green's function and its partial derivative is required.

Green函数及其偏导数的数值计算在水动力学中起着重要作用，当用边界元法求解流体结构相互作用问题时，需要大量的计算Green函数及其偏导数。

This article which points out the importance of the partial derivative of the unit vector through the common mistakes in the vector analysis and carries on the analysis of the practical examples enables the general scholars to have a comprehensive understanding to this question.

通过矢量分析中常见的错误，指出了单位矢量的偏导数在矢量分析中的重要性，并举出实例进行分析，旨在使广大学者对这一问题有一个深刻的认识。

Firstly, this paper definited pseudometric d for n -foldproduct of σ-algebra A of subsets of a given set X , and definited indicator function ; secondly, gave the concept of differentiable of set function at S° and concept of partial derivative at S° with respect to the ith argument Si through indicator function, and defound the weak efficient solution of and optimality necessary condition; Finally, obtained three weak duality results and strong duality results under generalized convexity conditions.

首先，对已知集X的子集的σ-代数A的n-折积A^n，定义了伪度量d，给出了相应的特征函数〈h，Is〉；其次，通过特征函数给出了集函数在S 可微的定义及集函数在S 关于第i个变量Si的偏导数定义；给出了多目标规划问题的弱有效解概念及的最优性必要条件；最后，分别在目标函数和约束函数的3种较弱凸性条件下，研究n-集函数多目标规划问题的对偶问题，获得了3个弱对偶结果和强对偶结果。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。