历史查询   



 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。 
The same paradigm applies to the superfluid transition temperature of liquid4He, but results in a slightly different equation.


We consider the asymptotic solution of the TonksLangmuir integrodifferent equation with an Emmert kernel, which describes the behavior of the potential both inside the main plasma volume and in a thin boundary layer.


A similar situation occurs when the wedge is anisotropic except that 2α* is governed by a different equation and depends on material properties.


The relationship between the actual and geostrophic winds is described using three different equation sets.


The conversion from neutron stars with different equation of states (EOSs) for neutron matter into strange stars with different EOSs for strange quark matter has been studied in a general relativistic numerical calculation in this paper.

 更多 


 The diffusion coefficient of hydrogen in an iron membrane was measured using slightly improved electrochemical hydrogen permeation technique. Corresponding to the assumptions of constant hydrogen concentration and constant hydrogen flux on the cathodic side of the membrane, two different equations for estimation of the diffusion coefficient were derived. The criteria for choosing suitable equations are discussed. It is pointed out that the equation associated with constant hydrogen concentration... The diffusion coefficient of hydrogen in an iron membrane was measured using slightly improved electrochemical hydrogen permeation technique. Corresponding to the assumptions of constant hydrogen concentration and constant hydrogen flux on the cathodic side of the membrane, two different equations for estimation of the diffusion coefficient were derived. The criteria for choosing suitable equations are discussed. It is pointed out that the equation associated with constant hydrogen concentration must be applied here. The obtained value of D is 4.3 ±0.3× 107cm2/sec, which is in harmony with the data from nonelectrochemical methods.  一个略加改进的电化学氢渗透技术被用于测定氢在铁膜中的扩散系数。根据膜的阴极侧面上等氢浓度和等氢流量的不同假设,导出了两个计算D值的方程式。讨论了选用合适方程式的依据。实验表明,对所述的测定体系,必须采用与等氢溶度有关的方程。测得D值为4.3±0.3×10~(7)cm~2/sec,结果与某些非电化学方法的测定值一致。  A novel model of synchronous machine with damping winding for the transient analysis of power systems is presented.With rotation factor method,the differential voltage equations of a synchronous machine,which are coupled between d axis component and q axis component,are dispersed into de coupled different equations while the synchronous machines is described by its de coupled d axis equivalent circuit and q axis equivalent circuit.The model is more accurate than EMTP's model and... A novel model of synchronous machine with damping winding for the transient analysis of power systems is presented.With rotation factor method,the differential voltage equations of a synchronous machine,which are coupled between d axis component and q axis component,are dispersed into de coupled different equations while the synchronous machines is described by its de coupled d axis equivalent circuit and q axis equivalent circuit.The model is more accurate than EMTP's model and is very convenient for practical use.An example is presented to illustrate its accuracy and stability.  提出了一种新的适用于电力系统机网暂态过程数值仿真的有阻尼绕组同步电机模型。通过采用“旋转因子法”对同步电机的电压方程组进行差分化 ,成功地消除了因旋转电势引起的 ,存在于同步电机直轴电压方程和交轴电压方程之间的耦合 ,导出了相互解耦的直轴和交轴瞬态等值电路。文末的算例通过比较该模型与EMTP模型的仿真结果 ,证明这种新模型是正确的 ,其仿真算法比常用的EMTP算法更精确、更稳定  In recent years, wavelet interpolating methods are applied to the calculation of electromagnetic fields and many results are obtained in many references. Some problems which are not considered in these main references are pointed out and solved. Firstly, correlative wavelet, which is constructed on the basis of the compact support wavelet with integral shift orthogonal feature, is applied to the analysis and calculation of electromagnetic fields. Its expression is succinct and its computational complexity is... In recent years, wavelet interpolating methods are applied to the calculation of electromagnetic fields and many results are obtained in many references. Some problems which are not considered in these main references are pointed out and solved. Firstly, correlative wavelet, which is constructed on the basis of the compact support wavelet with integral shift orthogonal feature, is applied to the analysis and calculation of electromagnetic fields. Its expression is succinct and its computational complexity is only half of the original wavelet. Meanwhile, the convergence of interpolating functions is researched. Secondly, instead of Galerkin method, the models of wavelet collocation method fitting to solve some kinds of media boundary problems is derived. So, replacing the current density function by wavelet interpolating function, the error appearing in reference [1] can be avoided, thus the accuracy of the solution is improved. The value of same cutting nodes in adjacent areas which is solved by different equations is unique.  近年来小波插值方法已应用到电磁场的数值计算中,且取得了一系列成果。文章指出了目前这方面主要文献未能解决的问题,将基于紧支撑、具有整数平移正交性的小波构造出的自相关小波作为插值函数应用于电磁场的数值分析和计算,其计算量仅是紧支撑正交小波的一半,并讨论了插值函数的收敛性,导出了适用于多种媒质边值问题的小波–配置方法模型,将配置方法取代Galerkin方法,避免了用小波插值函数代替电流密度函数时所带来的误差,从而提高了解的精度。此外,该方法对相同剖分节点在相邻区域的不同方程中求出的值是唯一的。  
相关查询  



