查询词典 differential method

For example, we study the properties of the"centroid curve" and the"auxiliary curve", and identify two planes in which these two curves are defined respectively; we also use the idea of homotopy method to prove a fact that the orbit of a differential system has no triple contact point with the line we considered. Another key technique, which we use several times, is deformation argument.

例如研究由Abel积分之比定义的"质心曲线"和"辅助曲线"的几何性质，并把这两条在不同平面上定义的曲线放在同一坐标系中考虑；利用拓扑中同伦的思想来证明微分系统的轨线不可能与某条直线三重相切；利用几何方法与分析计算相结合证明了某一曲线是正则的；以及连续变动参数的技巧。

This paper proposes a guess attack method on Trivium based on chosen differential.

给出一种基于选择差分对Trivium算法进行猜测攻击的方法。

This paper proposed a method to estimate and compensate the differential truncation error using tracking and telemeted data.

如何辨识和估计观测数据包含的各种误差，理论和实际均做了大量讨论，建立了诸多比较实用的方法[2～4]。

This method calculated the settlement of each pile and the differential settlement ulteriorly .

该方法可以计算群桩中每根桩的沉降值，进而计算群桩的差异沉降。

The undistinguishable relationship, the attribute -oriented generalization and the reduced operation algorithm are discussed. The n a tapping method for attribute-oriented RST data is presented. Applying the b est reduction and kernel operation to the differential matrix, the decision rule s in logical meaning are given.

在此基础上，提出了一个面向属性的RST的数据挖掘方法，即基于系统的关系数据库形成差别矩阵，并对差别矩阵施行最佳约简和核操作，给出在逻辑意义下的决策规则，从而完成领域的知识发现。

This method is not necessary to solve a complex unlined partial differential equation so that the computational cost is reduced.

本文在温度场的模拟计算中，将铸件中同时发生的连续的传导传热和对流传热，用在微小时间间隔内独立的传导传热和对流传热近似表达，完成充型过程中流场与温度场的耦合计算。

Firstly, the integral-differential equation described the radiation field evolution is derived, and then the instability of its solution is also investigated analytically. By using the perturbation and iteration method, the threshold detuning and threshold linear growth rate of the unstable solution are analyzed and discussed in detail.

首先，建立了一个描述辐射场演化的积分一微分方程，解析分析了系统解的不稳定性，并采用线性方程解的微扰迭代方法进一步对系统不稳定解出现的失谐量阈值和线性增长率阈值等作了详细讨论。

The document [1] to [5] reasearch the method of constant variation for solving nonlinear differential equation.

非线性微分方程没有一般的求解方法，而常数变易法是求解一阶线性微分方程的主要方法。

The paper proposes the free difference operation, which is a new method computing the variation of gray level, based on the classical differential operators.

在传统的微分算子的基础上，论文提出了一种广义的计算图像灰度梯度的方法——自由差分运算。

Using the new comparative method, the variation of constants formula, M-matrix theory, integral differential inequality, new theoretical results on global exponential stability of neural networks with bounded time-varying delays and Lipschitz continuous activation functions have been obtained.

利用新的比较方法的思想，改进了一维线性和非线性纯时滞微分系统的3/2稳定性定理，推广了Yorke条件到具两个时滞项的情形，将Yorke等人的3/2稳定性定理推广到具两个时滞项的线性和非线性纯时滞微分系统，进一步还推广到N维纯时滞微分系统，为纯时滞神经网络的研究打下理论基础。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。