查询词典 approximation theorem

In Chapter 1, we will briefly introduce Diophantine approximation and metric Diophantine approximation over the real number field and state some results which are important for our work.

在第二章，我们将介绍在正规Laurent级数体上的Diophantine逼近。第一节罗列了一些定义及我们即将使用的符号。

In the framework of the density functional theory, the structure of the α modification of zinc diphosphide (α-ZnP2) at the pressure from zero to 40 GPa is investigated by using molecular dynamics simulation, in which both the local density approximation and the generalized gradient approximation are employed.

利用密度泛函理论，分别采用广义梯度近似和局域密度近似对α-ZnP2在0~40GPa范围内的结构进行相关的分子动力学模拟，得到了它的压强-体积关系。

Based on conventional fuzzy control theory, an analysis of triangular partition fuzzy control is given to present several properties of TPFC: the fuzzy approximation mechanism, the approximation accuracy, entropy equalization, zero-error reconstruction and interpolative reasoning.

在研究经典模糊控制的基础上，本文分别从近似机理、精度分析、等熵设计、无偏差重构以及插值推理等不同角度对三角划分模糊控制进行了较系统的分析与研究，得出了用于HIFC设计与学习的一些重要结论。

The approximation solution of the biomathematical model of muscular blood vessel under the condition of the nonresonant case is obtained. The expansion method for two variables of perturbation theory is used and the approximation solutions are given to the biomathematical model of muscular blood vessel under two cases.

求得了具有小阻尼、硬外激励的肌型血管生物数学模型在非共振情形下的一次近似解，并利用两变量展开法，经方程演化，求得了具有小阻尼、弱外激励的肌型血管生物数学模型在非共振和共振两种情况下的首次渐近解。

We study some important topics such as the L_p-approximation, pointwise estimate and copositive approximation.

无论是所得结果还是所用的方法，都是对已有结果和方法的改进和创新。

We calculate its radialization correction and make the correlative discussion,obtain the cross section of electron-antielectron collision under chain approximation,and compare the tree-level cross section with the cross section under chain approximation.

对其辐射修正作了相关的计算和讨论，从而得到了电子-正电子碰撞在链近似下的散射截面，并与最低阶的散射截面作了比较

While approximation model is very close to actual model,and the precision of approximation is very high,the result of optimization is significant,and authentic;contrarily,the result of optimization is insignificant,and unauthentic.

近似模型和真实模型相差不大，近似的精度很高，优化出的结果就是有意义的，可信的；反之，优化出的结果就是没有意义的，不可信的。

I.! y P,{7 v: R; O0 D INTRODUCTIONIn most of the previous studies like [1-3], the effect of SRS in DWDM fiber opticsystems has been treated under various assumptions like undepleted pump approximation, wavelength independent fiber loss coefficient, triangular approximation of Raman gainprofile, negligible loss of energy whenever a short wavelength photon is transformed into a long wavelength photon (i.e., l i / l k ~ 1), equal power loading in all the wavelength channels and equal channel spacing.

P _ W/ I 在以往的绝大多数研究中，如[1-3]，人们都认为， SRS 在 DWDM 光纤系统中的影响是在诸多假设，如未衰减泵近似值，波长依赖光纤损耗系数，喇曼增益表的三角近似值，当短波光子被转变为长波光子时(i.e。， l i / l k ~ 1可忽略不计的能量损耗，各波长通道均等的动力负载以及均等的信道的频率间隔。

Formally,the process is considered as fuzzed of the lower and upper approximation sets. Finally, an example shows that membership degrees more visualy and reasonably describe that objects belong to the lower and upper approximation of the set.

实例分析说明在不完备信息系统中，考察对象对于上、下近似的隶属度能更直观、合理地反应对象隶属于某一集合的上、下近似的情况。

Comparison of theoretical predictions with corre-sponding computer simulation data uncloses the superiority of the Rogers-Young approxima-tion over Hypemetted chain approximation and rescaled mean spherical approximation forfreezing.

理论预言与相应的计算机模拟数据的比较揭示了Rogers-Young近似比超网链近似与重标度平均球形近似精度高。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。