查询词典 differential method

Thus, to study tooth surface curvature is significant. However, from the published information, the curvature of face gear drives hasn′t been well studied until now. Based on the knowledge of differential geometry, a method for calculating principal curvature and principal directions for face gears is established, and thus the principal v...

文中利用微分几何原理推导了面齿轮传动的齿面主曲率与主方向，由此得出面齿轮传动中诱导法曲率的两个主值；开发了相应的程序；进行了实例计算；分析了传动中的主要参数对曲率的影响，所获得的结论对面齿轮传动的强度计算与分析具有参考价值

First,making use of martingale method,pricing formula on European contingent claim,price of call and put option were obtained;Then the partial differential equation which price of European contingent claim satisfgied was deal with and hedging strategy for option was obtained.The sensitivity analysis was given.

首先利用鞅方法给出欧式未定权益一般定价公式，并得到欧式买权、卖权价格的解析表达式及平价关系，推广了一般Black-Scholes模型及Merton模型的结果；其次利用Ito公式给出欧式未定权益价格应满足的偏微分方程和套期保值策略；最后给出了欧式期权价格的灵敏度分析。

The qualitative theory of ordinary differential equations and numerical simulation method are employed to investigate the kink waves of a nonlinear quartic equation.

用微分方程定性理论结合数值模拟方法研究了一类非线性4阶Boussinesq方程的扭结波。

To understand how to use differential centrifugation to separate organelle and biological molecular;microspectrophotometry;immunofluorescence technifue and immune electron microscopy;in situ hybridization; aser scanning confocal microscopy;the method to show the nucleic acid、protein、enzyme、glucide and lipid; negative staining; freeze etching and quick freeze deepetching; flow cytometry.

了解用超速离心技术分离细胞器与生物大分子；显微分光光度测定技术；免疫荧光技术与免疫电镜技术；原位杂交技术；激光共焦点扫描显微镜技术；细胞内核酸、蛋白质、酶、糖类与脂质等的显示方法；负染色技术冷冻断裂和冷冻蚀刻电镜技术；流式细胞仪。

The governing equation is further reduced into an ordinary nonlinear differential equation by Galerkin's method.

利用Galerkin方法将其转化为非线性振动方程。

The method of regression line has used the differential coeffi- cient extreme value...

回归直线法利用了微分极值原理，用它确定断电瞬间绕组的温度比采用其它方法更准确一些。

A new multi-exponential inversion method for NMR relaxation signals is presented and tested,which is based on differential evolution algorithm.

提出了一种基于差分进化算法的核磁共振弛豫信号多指数反演新方法。

In this thesis, it is the main problem to investigate that the numerical solution and solution space of the different differential equations by making use of the theory of the Wavelet-Galerkin method and the reproducing kernel Hilbert space, respectly.

本文分别应用小波分析理论和再生核理论对微分方程的求解和解空间的问题进行了研究。

Based on the analysis on principal root of the different-differential equation, a parameter design method that can achieve the best transient performance is presented.

通过研究差分微分方程组的主根，给出了能够使得控制系统以最快速度达到稳态的参数设计方法。

Ordinary Differential Equations Runge - Kutta method series of procedures, from two to four algorithms.

常微分方程的龙格库塔法系列程序，从二级到四级的算法。

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。