查询词典 numerical

Also,it gets the conspectus of the modern numerical analysis methods about the problems of rock mass project.

由于经典力学对解析解的设定非常严格，使其用于岩体工程的求解极为有

The numerical relationship between the proportionality constant of surface roughness scattering mobility model and surface roughness degree is deduced.

推导出SiC表面粗糙散射迁移率模型的参数与界面粗糙度之间的数值关系。

Based on the equilibrium equation of an arch element the cubic nonlinear dynamic model with second order is established and the nonlinear differential dynamic system without constant term is obtained through a transfer process of T=U+b. Hence three fixed points and the homoclinic orbits are found. The critical condition of the chaotic vibration of the elastic arch is given by using the method of Melnikov function. The numerical results of the stationary and chaotic motion are given and discussed.

首先利用拱的单元平衡方程建立了拱的二阶三次非线性动力学模型；然后通过变换使方程转化为不含常数项的非线性微分动力系统，并由此得到无扰动系统的3个不动点与同宿轨道；再用Melnikov函数法给出了发生混沌的临界条件；最后给出了该系统出现定常运动和混沌运动的数值结果。

In chapter 5, the numerical model of FSW is established by using rate dependent constitutive model.

第五章中采用率相关本构关系建立了搅拌摩擦焊接的数值模型。

The numerical experiment results by researching the optimal problem of standard test functions show that the election-survey algorithm can constringe rapidly to global optimal solution and has better stability.

通过对标准测试函数优化的数值实验结果表明，竞选算法可快速搜索到函数的全局最优解，并具有较好的稳定性。

The results of in-situ test are in good agreement with numerical simulation and it show that this method can successfully be applied to the identification and diagnosis of structural damage with the consummately trained wavelet neural network as an intelligentzed classifier.

仿真模拟试验显示了该方法的合理性，结果表明训练成功的神经网络可以作为智能分类器对框架结构损伤进行有效的识别和诊断。

This paper used commerce software FLUENTS to implement numerical simulated compute because it could in more detail and comprehensive open out the distribution laws of the flow field in the channel and in the holes and the experimental results had been consummately enlarged. At last, the experimental results were contrasted and analyzed with the computational ones.

本文还利用商业软件FLUENT5进行了数值模拟计算，数值计算可以更详细更全面地展现通道内以及孔内流场的分布规律，更加丰富和完善了实验测量结果，并将实验结果和数值计算结果进行了对比分析。

In the numerical simulation, the forming force is the contact force.

在数值分析中成形力即为接触界面的作用力。

Objective To explore several numerical methods of ordinal vailable in one.way ordinal contingency table and their interrelationship,and to compare corresponding statistical analysis methods such as Ridit analysis and rank sum test.

目的 探讨单向有序表中有序变量的5种数量化方法及其相互间的关系，以及数量化后所对应的Ridit分析、秩和检验等统计学分析方法在临床研究中应用的比较。

At last a direct numerical integration method is applied to computing the integration, and in this process continued fraction expansion was used to speed up integral summation.

在此过程中通过连分式展开加快积分求和的收敛速度。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。