查询词典 finite base

Finite element discretization was carried out on the mathematical model to get a fully coupled finite element equation with the parameters of element nodal displacement and element nodal pore pressure as unknown variables. Finally, the transient nonlinear finite element equation in incremental form for reservoir fluid-solid coupling is obtained by means of time discretization in implicit difference scheme.

基于与微分方程等价的加权余量公式，在空间域采用有限元离散，对时间域进行隐式差分格式离散，导出了以单元节点位移和单元节点孔隙压力为未知量的储层流固耦合的非线性有限元增量方程。

Firstly, the fully discrete standard finite element Galerkin method and the nonlinear finite element Galerkin method and the modified finite element Galerkin method in which time is discretized by the Euler implicit difference scheme are considered, and the - and - global relative errors and CPU time corresponding to the SG method, the NG method and the MNG method are computed respectively.

首先，对于全离散(时间离散是欧拉显式格式)标准有限元Galerkin方法和非线性有限元Galerkin方法以及修正有限元非线性Galerkin方法，分别进行数值计算，并比较了三种算法的计算解与精确解的误差估计及所耗费的CPU时间，结果验证了MNG方法要优于NG方法，而NG方法又优于SG方法。

In this dissertation, Patran is used as the pre-processing software, the interface routine of the finite element updating program and the current engineering finite element softwares is programed using PCL language, and the finite element model updating is thus accomplished.

本论文使用Patran做前处理，并基于Patran的二次开发，使用PCL语言编写出有限元模型修正程序与现有工程有限元软件的接口程序，完成有限元模型修正。

In this project, we investigate the invertibility problem of finite automata, cryptosystems based on finite automata theory and security protocols. Some applications of the finite automata public key cryptosystem to internet are explored.

本项目研究有限自动机可逆性问题和基于自动机理论的密码算法与安全协议，探讨有限自动机公开钥密码在因特网环境的应用。

This paper studies the properities of weakly invertible Linear finite automata through zero state,and obtains some results of weakly invertibility of Linear finite automata and description of the minimal linear finite sub-automata.

通过零状态研究了线性有限自动机的一些性质，得到了线性有限自动机弱可逆的一些结果，并给出了最小线性子有限自动机的描述，最后给出了算法实现。

In chapter 2, we prove that sn—first countable spaces are preserved by the finite subsequence-covering mappings.By this result, we prove that the finite subsequence-covering, quotient mappings preserve g—metrizable spaces, also prove that the finite subsequence-covering, closed mappings preserve sn—metrizable spaces, g-metrizable spaces, metrizable spaces, point-countable bases.

在第二章中，我们主要证明了有限子序列覆盖映射保持sn-第一可数空间，作为它的应用，又证明了有限子序列覆盖、商映射保持g-第一可数空间，也证明了有限子序列覆盖闭映射保持sn-度量空间，g-度量空间，度量空间，点可数基。

A rational procedure is presented to solve finite element problem mixing nonlinear and elastoplastic materials. To avoid numerical problem, the incremental finite element analysis of geometrically altered structures is adopted, and a corresponding automatic finite element mesh strategy is proposed for simulating construction process of excavation.

本文采用变结构有限元分析方法，建立了一种可以灵活模拟基坑工程各种施工工况的有限元网格方法，该方法克服了现有的一些网格方法无法模拟加支撑、加锚杆或拆支撑的缺点，以及不便于计算机自动生成有限元网格的不足，可以更全面、准确地模拟施工过程，大大方便了有限元前处理工作。

Based on the analysis of the. traditional structured finite element programming this thesis makes partial modifications for FINITE, the structure analysis program developed by the object-oriented technology. Using inheriting technology of class expanded the existing classes and enhanced its performance and the program has been implemented in both console platform and graphic interface environment. The paper illustrates the advantages of object -oriented finite element programming.

本文在对传统的结构化有限元程序分析的基础上，针对有限元分析应用的特点，对现有的一个采用面向对象技术的结构分析程序FINITE进行部分修正，利用类继承技术，对已有类进行扩充，丰富其计算功能，并用Visual C++6.0在控制台和图形界面下同时得以实现，进一步论证了面向对象有限元程序的优越性。

The formulas derived show that FAM is more accurate and reasonable than finite difference method and finite element method , also, on the element partial differentiation of dynamic Reynolds equations with respect to circumferential and axial direction is directly obtained by finite analytic solution.

本文在详细分析目前流体润滑轴承层流、紊流润滑理论及轴承-转子系统稳定性理论的基础上，提出了将有限分析法用于计算动压、静压、动静压轴承的静特性和动特性系数，并推导了相应的计算公式。

We constructed a finite volume scheme of fifth order Hermite type with high accuracy for twopoint boundary value problems, choosing trial and test spaces as the fifthorder finite element space of Hermite type and the piecewise linear function space respectively. We didn't use higher derivatives as interpolation conditions, which is the same as the thirdorder finite element of Hermite type, but the scheme obtained had higher accuracy.

构造求解两点边值问题的一种Hermite型五次元高精度有限体积法，其中试探函数空间取Hermite型五次有限元空间，与Hermite型三次元相同，未引入更高阶导数作为插值条件，检验函数空间取分段线性函数空间，这样构造的格式求解精度更高。

There are two types of gold deposits in this area, namely altered rock type and quartz vein type.

本区金矿床包括两种类型：柴胡栏子金矿床为蚀变岩型金矿；莲花山和红花沟金矿床属石英脉型。

You were home and it was two weeks ago.

你回到了家里。当时是两周前。