查询词典 method of difference

Compared with Finite Element Method and Finite Difference Method, Boundary Integral Equation Method is computationally more efficient.

与有限元法和有限差分法相比，该方法具有更高的计算效率。

The difference in coliform counts among national standard method,professional standard method and chromogenic medium method has been compared.

比较国家标准、行业标准和显色培养基检测方法检测大肠菌群结果的差别。

The examples indicate that the algorithm has strong pertinence and high efficiency, hi the discrete variable optimization, the problem is solved in the relative quotient method On the base of analyzing the relative quotient method, the conjugate gradient direction is used to modify the old search directions, the iterative matrix of the algorithm, and the method to resolve the discrete variable optimization, the relative conjugate difference quotient algorithm is presented.

离散变量优化算法是从相对差商法开始的，在详细分析相对差上法的基础上，用共轭梯度方向修正原有的搜索方向，并对算法的迭代矩阵进行相关的修改，最终形成一种用于求解离散变量优化问题的RCDQ法。

New inspection method was deduced by using constant coefficient of variation in sequence inspection method, and the approximate relationship of inspection variables between mean method and sequence one was gained by analyzing difference of two methods.

将变差系数不变的条件引入到序贯检验方法中，推导出新的结构强度检验方法，分析检验变量与均值法的差异，得到两者的近似关系。

An electromagnetic numerical analysis, set finite difference method, finite element method and the method of moments as one basis for teaching materials.

详细说明：一本的电磁数值分析方面的，集有限差分法，有限元法和矩量法为一体的基础教材。

The results showed: no significant difference was found between the results of single tube quantitative assay method and multiple tube fermentation technique;single tube quantitative assay method showed better accurateness,precision,and reproducibility than multiple tube fermentation technique;single tube quantitative assay method was quicker and more economical.

结果表明：MUG单管定量检测法与大肠埃希氏菌多管发酵法对菌悬液、天然海水、水产品的检测结果没有统计学差异；MUG单管定量检测法检测数据的精确性高于大肠埃希氏菌多管发酵法，而且更为快速、经济。

In this paper, we consider hyperbolic conservation laws, and the following work has been done to the finite volume method on unstructured meshes :In preface , we introduce the backupground of the oringe of the finite volume method, and point out the limitation of the finite difference methods and the finite element methods, and import the finite volume method.

本文主要考虑双曲型守恒律方程，对二维非结构三角形网格有限体积方法作了如下工作：介绍了有限体积方法的产生背景，指出了有限差分方法和有限元方法中的特点，对有限体积方法的产生和发展给出了比较详细的分析。

Appraised the clinical effect of the flavone of rhizome drynania on Senile Osteoporosis, according to the dynamic observation on integrative scores of lumbodorsal pain and lumbodynia,"VAS section grading method" on lumbodynia,"Barthel index rating method" on ADL, detected BMD on anterior-posterior position lumbar2~4 vertebra body and proximate of femur including neck/ward/troch, and determined the index of bone transition including BGP/PINP/ICTP through the radioimmunity method before and after treated half a year, then contrast intragroup and selfgroup. Depending on the standard of curative effect, contrast the difference of curative effect between two groups.

采用随机对照的方法，分为治疗组36例，对照组34例，依据对腰背痛及腰痛综合评分进行动态观察；依据"疼痛VAS线段分级法"对腰背痛（静止痛、翻身痛、久坐痛、起身痛、弯腰痛、步行痛、睡眠痛、叩击痛、压痛）进行量化动态观察；依据"Barthel指数评定法"对老年性骨质疏松症日常生活活动能力进行观察；采用双能X线骨密度仪对腰椎(L2-L4)、股骨近端各部位：股骨颈、股骨三角区、股骨粗隆进行骨密度定量检测；应用放射免疫法对骨转换指标进行测定，骨形成指标：骨钙素、Ⅰ型前胶原氨基端前肽；骨吸收指标：Ⅰ型胶原交联羧基末端肽等，评价骨碎补总黄酮治疗老年性骨质疏松症的临床效果。

In Chapter 4, a symmetric triangular partitioned secant method for solving large scale sparse unconstrained optimization problems is constructed, which is a combination of a secant method and a finite difference method, and depends on a consistent partition of the columns of the lower triangular part of the Hessian matrix; it reduces the number of gradient evaluations required by Powell and Toints algorithm (the indirect lower triangular substitution algorithm) by one at every iterative step.

此算法是基于稀疏Hesse阵的下三角部分的列的相容分划的基础上建立起来的，把割线法和有限差分法有机的结合在了一起，在每次迭代中，把由Powell和Toint的算法所需要的梯度赋值次数减少了一。

The difference of Runge-Kutta method, the method of multiple scales, the first method of interpolate perturbation, the.

分析了龙格库塔法、多尺度法、插值摄动第一法、插值摄动第二法等4种方法在计算一类非线性振动问题时的差异，给出了每一种方法对应的时程图和相位图，编写了每种方法的Matlab程序。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。