查询词典 approximate differentiability

In order to develop this local property,this paper presents a method,which uses Fourier Series to approximate the boundary shapes of the shafts with periodic boundary of cross section,and uses the conformal mapping in Theory of Function of a Complex Variable to make the complicated boundary shapes of the shafts map a unit circle.Thus elastic theory can analyze...

本文提出一种方法，其实质是：采用富里埃级数来逼近横截面呈周期性变化边界的轴类零件的边界形状；并应用复变函数论中保角映射原理，将零件复杂的边界形状映像成单位圆，从而使弹性理论可以分析和计算复杂边界轴类零件的应力场；再通过留数的求解实现保角映射的反变换。

It is import of choosing a basis function in the theory and application of the locally approximate neural networks.

在局部逼近神经网络的理论研究和实际应用中，基函数的选取是非常重要的。

This paper deduces the accurate formulas for calculating the geometric characteristics of effective cross sections of members with welded H-shaped cross sections in gabled frames,and in order to simplify the calculation,presents the corresponding approximate calculation formulas.

推导了门式刚架中焊接H形截面构件有效截面几何特性的精确计算公式，为简化计算过程，给出了相应的近似计算公式。

It can draw the conclusion thatδ~(34)S_ in solution has an approximate content(0±3‰)with S isotope of pyrrhoSne by measuring S and Pb isotope of sulfide in ore bodies,a lower value shows S in hydrothermal fluid is origin from magma;Linear array of Pb isotope in galenite suggests that Pb may be multisources.

对矿体硫化物进行硫和铅同位素测定，获得溶液的δ~(34)S_与磁黄铁矿硫同位素组成相近约等于0±3‰，δ~(34)S_值小，表明热液硫是岩浆来源，方铅矿铅同位素线性排列，暗示出铅可能是多来源的。

Based on the technical document and the measured power spectral distribution, Gauss distribution model is employed to approximate the real source.

论文结合生产厂商的技术资料和实际测量的SLD光源的功率谱密度，采用高斯分布近似其功率谱密度，建立了光源振幅的色散模型。

In this thesis, we propose a simple admission control algorithm which adopts Gaussian distribution to approximate VBR traffic.

在这一篇论文中，我们提出了一个简单的允入控制演算法，其基本设计的思维在於利用高斯分布来近似变动位元速率的讯务。

In order to study the propagation of partially coherent modified Bessel-Gaussian beams passing through a paraxial ABCD optical system with hard-edge aperture,the approximate analytical propagation equation was derived with the hard-edged aperture function expanded into a finite sum of complex Gaussian functions.

为了对部分相干修正贝塞尔－高斯光束通过有硬边光阑近轴4BCD光学系统的传输进行研究，采用将硬边光阑窗口函数展开为有限个复高斯函数之和的方法，得到了近似的解析传输公式。

For general transport equation, we obtain the approximate solution of the scattering cross section from exitig photon flux.

本文研究：1。对于一般的迁移方程，根据泄漏的光子流得到散射截面的近似值。2。

During the modeling of approximate sequence, a generalized autoregressive conditional heteroscedasticity model, to which the exogenous variables are added, is built to form GARCHX model to avoid the defect of traditional time sequence model that the external impacting factors are neglected.

建立考虑异方差的广义自回归条件异方差模型(generalized autoregressive conditional heteroscedasticity，GARCH)对概貌序列建模，并在GARCH模型中加入外生变量形成GARCHX模型，以弥补传统时间序列模型忽略外界影响的缺陷。

In the paper, many further discussions about the optimal control problem,the approximate optimal solution to generalized time optimal control problem and stability of the degenerate systems with delay are considered and some important and meaningful results are obtained in it.

而本篇论文则是对具有时滞的退化系统的最优控制问题，广义时间最优控制问题的近似最优解和稳定性问题进行了讨论并且得出了一系列的重要成果。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。