查询词典 differential method

The formula was established about calculating design parameters and technological parameters of ideal strip and bent strip in the period of forming. The thesis presented how to calculate the deformed area length and contact are radius of contact deforming between two elastic bodies on condition of the friction. The calculating formula of pinch force about plate-strip pinch mill was given and the results were analyzed that friction coefficient and radius of pinch rolls are very important for determining pinch force. Moreover, the rule of deforming and stress distribution of different 〓 ratio were gained on condition that the deforming was considered to be non-uniform distribution in the gap. The differential equations were got that calculate the displacements of large deflection of elastic cantilever rectangle plate with fixed end and the formula of the Finite Strip Method was conducted to study the regularity of mid-plane displacements, deformation and stresses for elastic-plastic large deflection bend of cantilever parallelogram plate with fixed or slidable end by integrating Prandtl-Reuss equation.

建立了一套完整的设计参数计算公式和在成型过程中理想带钢或具有月牙弯带钢的工艺参数的调整公式；在考虑摩擦力的条件下，对两弹性体接触变形过程中的接触变形区长度和接触弧半径用位移解法进行了研究，推导了板带递送机的递送力计算公式，从而得知在递送机设计过程中，应选择适当摩擦系数和辊身直径；另外，还从辊缝内带钢实际变形出发，分析了对于不同的〓值，带钢的变形规律及应力分布状况；建立了固定端悬臂矩形板弹性大挠度弯曲变形的控制方程，并且在对Prandtl-Reuss方程的积分处理的基础上，导出了固定端和滑动端悬臂平行四边形薄板的弹塑性大挠度的中面伸展位移、变形和应力的有限条元法公式，编写了Fortran语言计算程序，在各种参数条件下，对螺旋焊管成型过程变形规律进行了全面的分析研究，从而为螺旋焊管的生产和进一步的改进提供了理论依据。

In this paper,by means of the iterative analysis method,the existence for periodic solution of first-order differential equations is considered.

利用迭代分析方法讨论了一类一阶微分方程周期解的存在性，并得到一些新的结果。

For polydisperse systems at large Péclet number, we establish the systems of differential equations describing the leading term and the second term of the pairdistribution function via regular perturbation method.

针对高Péclet数情形，通过正则扰动法我们建立了决定对分布函数的微扰展开的主导项和一阶项的联立方程组，并用由此算出的对分布函数的数值解计算了系统的沉降系数。

A new differential pulse voltammetric method for detection of alkaline phosphatase using phenyl phosphate as substrate was developed.

研究了以磷酸苯酯为底物微分脉冲伏安法测定碱性磷酸酯酶的方法。

In Chapter 2, by using a class of piecewise continuous Lyapunov function and the method of analysis, we study existence, uniqueness and stability of impulsive Volterra intergro-differential equations.

在第二章中，主要利用分析技巧和分段Lyapunov函数等方法，讨论了含脉冲的Volterra积分微分方程解的存在性和其零解稳定性的充分或必要条件。

This is a basic point, The mass conservative interpolation function is deduced in this thesis and the method to solve the stream surface expression from the partial differential equation of flow field is proposed.

本文首先推导了正确的基于质量守恒的单元插值函数，并提出从流场的偏微分方程直接求解流面方程的方法。

As we well know, the symmetry reduction methods related to group theory, such as the Lie point symmetry method, conditional symmetry, generalized conditional symmetry and etc, are effective tools to study the exact solutions of the nonlinear partial differential equations.

众所周知，与群论有关的对称约化方法，如李点对称方法，条件对称方法，一般条件对称方法等，是研究非线性偏微分方程精确解的有效方法。

Objective: To establish a simple rapid method for determining Kjeldahl nitrogen content by 1st order differential coefficient single sweep polarography.

建立用一阶导数单扫描极谱法测定食品中凯氏氮含量的简单、快速的方法。

They explain that, in 1989, Fleischmann and Pons used an open cell from which energy was lost in a variety of ways: the differential equation used to determine excess energy was awkward and subject to misunderstanding, and the method had an error of 1% or less.

他们解释， 1989 年Fleischmann 和Pons使用了能量丢失用各种各样的方式的一个开放细胞：微分方程使用确定剩余能量笨拙和依於误解，并且方法有错误1%或较少。

To solve the resulted secondorder ordinary differential equation set in the case of homogeneity orpiece homogeneity,the Frobenius Power Series Method is employed andgeneralized in a matrix form.

考虑均匀或分段均匀的特殊情形，对于导得的二阶常微分方程组，文中推广了常用的Frobenius级数求解方法，首次采用矩阵形式进行了推导。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。