查询词典 variation method

The effect and variation of major gene are estimated by the maximum likelihood method implemented via expectation-maximization algorithm. Major gene is tested with the likelihood ratio test statistic.

该方法以EM算法实现的极大似然估计方法进行主基因的效应估计，以似然比统计量进行主基因的各种遗传假设检验。

In order to obtain more general solution of second order linear differential equation with constant coefficients, which is important in theory and practice, on the basis of knowing a special of the second order linear differential equation with constant coefficients and by using the method of variation of constant, the second order linear differential equation with constant coefficients is transferred to the reduced differential equation and a general formula of the second order linear differential equation with constant coefficients is derived.

为了更多地得到理论上和应用上占有重要地位的二阶常系数线性非齐次微分方程的通解，这里使用常数变易法，在先求得二阶常系数线性齐次微分方程一个特解的情况下，将二阶常系数线性非齐次微分方程转化为可降阶的微分方程，从而给出了一种运算量较小的二阶常系数线性非齐次微分方程通解的一般公式，并且将通解公式进行了推广，实例证明该方法是可行的。

The method uses pulse expansion for the spatial variation and a linear interpolation in time.

该方法采用适合于空间变化和时域插值的脉冲扩展。

When the deformation modulus of soil is logarithmic normal distribution, even if the variation is large, reasonable precision can be obtained by center point method, in which the deformation modulus of soil is normalized equivalently.

对于土的变形模量服从对数正态分布的情况，采用将其当量正态化后的中心点法即使在参数大变异的情况下也可以获得理想的计算精度。

The RLS method exhibits lower variation in response signal for the same weight of BSA, human serum albumin and γ-globulin and has been successfully applied to the determination of the total protein in human serum samples.

用共振光散射方法对相同量的牛血清蛋白，人血清蛋白和γ—球蛋白进行测定，其相应的信号变化不大。

Using numerical simulation method, the variation of magnetic field-strength along the axis of helical current with the helical pitch and position is analysed in detail.

应用数值模拟的方法，细致地分析了螺旋线电流轴线上磁场随螺距和位置的变化关系。

The principle of this method is T_c measure the variation of susceptibility of magnetic materials with temperature near Curie point.

新方法的原理是在弱交流场下，测量磁性材料的磁化率κ随温度的变化，从而确定它的居里点。

It is therefore considered that magnetic susceptibility is an effective indicator for variation in heavy metal concentrations, and may serve as a new method for studying heavy metal pollution.

磁化率是重金属含量变化的一个有效指数，它的研究为重金属污染研究提供了一个新的方法。

The ancient kin-novels deeply influence the composition of modern novelists in many aspects: the kin identity of authors, genre selection, focusable object, narrative strategy, narrative structure, arrangement method, art spirit, tragedy spirit and so on. While modern kin-novels, on the basis of absorbing the tradition, develop the ancient kin-novels in the following aspects: enlarging the component of characters, continuity of character\'s fate, change of the end and the exploration of character\'s psychology and the variation of images and so on. The kin novels with familiar genre whether it is ancient or modern, will appear special stipulation that is resemble and matchable with kin-genre. This Paper mainly analyses it in three aspects of components of family characters, mode of kin-novel\'s declination and nation-home integrated net narration.

作为相同题材选择的家族小说，无论古代还是现代，都会出现与家族题材相匹配的某些共同点，本文主要从家族人物的构成模式、家族小说的衰亡模式、家国一体的网状叙事等三个方面对此展开分析研究；古代家族小说从题材选择、聚焦对象、叙事策略、叙事结构、绾结方式、艺术神韵、悲剧精神等多个方面对现代作家的创作造成深刻的影响：而现代家族小说在继承传统的同时，还从人物构成的渐趋丰满、人物命运在新的时代背景下的延续发展、小说结局的改变、人物心理探索的深刻和自觉、意象的变幻多姿等方面对古代家族小说进行了现代意义上的发展和演进。

Based on the elastic theory of large deflection and by taking into account the variation of the axial force and its effects on bending deformation of the drillstring in vertical section,the vibration of the drillstring induced by fluctuating weight-on-bit is described by a parametrically excited system.A Mathieu equation describing the system is established by Galerkin Method.By extending the solution into a Fourier series,the curves of dynamic bifurcation values and the dynamically unstable regions surrounded by the curves are presented.

基于弹性大变形理论，考虑到轴力沿钻柱轴线的变化及其对钻柱弯曲变形的影响等因素，将受自重作用的铅垂井段钻柱在波动钻压激励下的振动转化为一个参数激励系统，用Galerkin方法首次得到了描述此系统的Mathieu方程，并通过将方程的解展成富里叶级数的方法，得到了该振动系统的动力分岔值曲线及其所包围的动力不稳定区。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。