查询词典 calculus of finite difference

The mudsill and bracket of RWD/QX--48 X1X 2 electrical dust precipitator act as the primary study subject in this paper, and finite element analysis and optimization analysis are made by use of large-scale finite element analysis software I-DEAS, aiming at the demerit of nonstandard design on electrical dust precipitator in our country.

中文摘要：本论文主要以RWD/QX—48×1×2型电除尘器的底梁和支架为研究对象，针对我国电除尘器生产单位对其设计不规范、结构不合理的缺点，利用大型通用有限元分析软件I-DEAS对其进行了有限元分析和优化计算。

Finite Multiplicative Group In cryptography, we often use the multiplicative finite group: G = in which the operation is multiplication.

有限乘法群在密码学中，我们经常运用乘法有限群：G =，其中的运算是乘法。

Second, thestress-type ABC indicates that the ABC is an expression of interaction stress betweenthe near-field finite domain and the far-field infinite domain. It can compatible withthe finite element method very well as a natural stress boundary condition, leading tothe numerically stable near-field wave motion method.

其次，应力型指人工边界条件是有限域和无限域间相互作用应力的表达式，其作为自然边界条件较好地兼容有限元法，易于形成稳定的近场波动分析方法。

The paper put forward the route of static finite element analysis and structure optimization for the components of hydraulic pressure, performed the static finite element analysis of important components including higher beam, attained the distributing nephogram of stress and strain.

提出了液压机部件静态有限元分析和结构优化的思路，针对上横梁等重要部件进行静态有限元分析，得到应力应变分布云图。

The system is an integrated whole including simulation and real-time data gathering imaging, whose finite element model can be analyzed automatically and size can be adjusted. The isoline and nephogram drawing algorithm in finite element after-management have been realized.

伪迹的产生主要来自于测量数据中所包含的噪声和误差，对于反投影算法还有反投影理论本身所固有的星状伪迹。

This paper makes some studied in the building of Chinese character input modes based on automata theoretic, handles the control operation in the input model, and introduces the concepts of two-way deterministic Chinese finite automaton and two-way nondeterministic Chinese finite automaton.

本文从自动机理论的角度对汉字输入的数学模型进行了研究，把控制操作引入了输入模型，并给出确定汉字双向有穷自动机和不确定汉字双向有穷自动机的模型。

In order to simulate the mechanical behavior of nonhomogeneous materials numerically, the traditional finite element method is improved in this dissertation and the finite element method with nonhomogeneous elements is developed.

为了适用于非均匀材料的数值计算，本文将传统的有限元方法进行了改进，推导了非均匀单元有限元方法。

We discuss the completely tr-rank nonincreasing linear maps on finite vN algebras and prove that a unital self-adjoint and surjective linear map on finite vN algebras is completely tr-rank preserving if and only if it is a spatial 〓-automorphism that leaves the central elements fixed.

我们刻画了有限vN代数上完全迹秩不增的线性映射；也证明了有限vN代数上保单位元的自伴线性满射完全保迹秩当且仅当它是空间〓-自同构且限制到中心上是恒等映射。

In this paper, draw the idea of beam unit, the bias along the vertical box is divided into a number of oblique beam. On the basis of analysis of the displacement, through positive and oblique coordinate transformation relations, and directly built on the oblique coordinate system to describe the methods of displacement unit space. With potential energy principle is derived in oblique beam element stiffness matrix and the establishment of the finite element formulation. The preparation process of the finite element analysis is used to verify the structure of bias.

本文吸取梁段单元的思想，将斜交箱梁沿纵向划分为若干斜梁段，在位移分析的基础上，通过正、斜交坐标转换关系，直接建立在斜交坐标系内描述单元空间位移的方法，用势能驻值原理推导斜梁单元刚度矩阵并建立其有限单元列式，利用编制的有限元程序进行斜交结构的分析。

We can use the finite element postprocessing technique for the finite element solution in order to obtain a higher convergence order than usual one.

我们可以运用有限元后处理技术对有限元解进行处理，获得比一般解更高的收敛阶。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？