查询词典 arithmetic expression

In MPF, the dynamic explicit finite element arithmetic is very suited to simulate the sheet metal forming because the contact between the elements and the sheet is discontinuous and the loading condition is very complicated.

在板材的多点成形过程中，由于基本体和板材之间接触状态不断发生变化，加载条件及其复杂，应用动态显式有限元算法求解具有明显的优势。

Firstly it describes the development ,basic principle and application and propagation characteristic of mobile channel , then investigates the system structure of DAB transmitter and receiver separately and the key technology of realization of the digital audio broadcast system.And then discusses the system component of FFT －the demodulation module of OFDM .The 409- points FFT module employs a radix-4 decimation-in-frequency algorithm, includes arithmetic element , read and write address element ,twiddle factor element and control element , is realized by FPGA. In the end , the result is verified in the matlab .

首先概述了OFDM的发展、基本原理和应用以及移动信道的传播特性，接着分别研究了数字音频广播接收机和发射机的系统结构，以及数字音频广播系统实现的关键技术，然后详细论述了OFDM解调模块FFT的系统结构，主要研究了4096点FFT采用基－4按频率抽取实现的算法，整个FFT模块包括了运算单元、读写地址单元、旋转因子单元以及控制单元，并且在FPGA中进行了硬件实现，并在matlab环境下对结果进行了验证。

To research the frame as one system and find the congruous pre-tightening load, the finite element analysis models of combined frame are built up with selected Lagrange multiplier algorithm as contact arithmetic and applying pre-tightened force element.

为将机身作为一个系统来进行分析以确定预紧力，选择拉格朗日乘子法作为接触算法，并结合预紧力单元解决组合式预应力机身的有限元建模问题。

Tool paths, and working procedure effecting machining residual stress as well as the law of its releasing were analyzed systemically by using three-dimensional Elasto-plastic FEM, which can optimize the tool paths and make the working procedure more rational.In the course of FEM simulation, the birth-death element arithmetic was introduced into simulating material remove, and the kinetic Load-step was used to simulated tools work.

第四，在上述研究的基础上，利用三维弹塑性有限元技术系统地分析了铣削力要素下铣削加工中走刀路径对已加工表面残余应力分布状态的影响规律以及铣削加工工序间残余应力的相互影响规律，为优选出较为合理的走刀路径和加工过程中安排去应力工序提供指导。

A mathematical model of transfer function and arithmetic of fuzzy control were designed for the valve.

构建了机电流量控制阀传递函数的数学模型，并为之设计了模糊控制算法。

Aim To study the mean value of a new arithmetic function and its convolution.

目的 研究一个新的数论函数及其他对合式的均值性质。

By using elementary method, a new arithmetic function is studied, and an interesting asymptotic formula is obtained.

摘要利用初等方法研究一个新的数论函数的均值性质，并给出关于这个函数的一个有趣的渐近公式。

Results The mean value properties of this new arithmetic function and its convolution properties were obtained.

结果 得到了一个新的数论函数的均值性质及其他对合式的均值性质。

Simulation results show the feasibility and validity of the improved arithmetic by approaching complex nonlinear function step by step.

仿真研究进一步验证了该方案的可行性和有效性。

But the basic cause of the dearth is structural: it is an unhappy function of parliamentary arithmetic.

但人才匮乏的根本原因是体制问题：议会的计算职能不容满意。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。