查询词典 multi-linear

In fundament of numerical simulation , multi-ring active analogic protection is studied.

本文在大量的数值模拟的基础上对功率集成电路的多环有源保护结构进行了系统的研究。

Heating, power and cooling trigeneration hybrid-simulation system based on micro gas turbine is established by combining the merits of analogic simulation's real time character and digital simulation's multi function and high accuracy.

结合模拟仿真实时性和数字仿真多功能、高精度的优点，建立了基于微型燃气轮机的热、电、冷三联供系统的混合仿真装置，重点分析了仿真建模过程中模拟计算和数字计算的分配原则及系统的总成和特点。

In this paper, the overall design scheme of one assault rifle prototype with double cyclic systems and variable firing rate is illuminated in brief and the related analytical models of one DOF and two DOF by the basic theory of dynamics of multi-rigid-body system is established. The calculating analogue program in VB computer language for analyzing the movement regularities of floating body of the assault rifle prototype with some universal property and function of man-machine conversation is completed. The comparison between the calculating results and the experimental results is conducted also.

本文对某步枪双循环变射频发射原理样机方案进行了简单的说明，应用多刚体系统动力学基本理论建立了原理样枪的一自由度和二自由度动力学分析模型，用VB编写了具有一定通用性和人机对话功能的自动机运动规律分析计算程序，并将计算结果与试验结果进行了比较，验证了数理模型的正确性。

Single or multi channel data logging device with either 1, 4 or 8 analogue inputs, graphics display capable of displaying numeric or graphical representations on data on a 128 by 64 point backlit display.

单一或多个通道数据记录装置，可以1， 4或8模拟输入，图形显示能显示数字或图形表示的数据， 128 64点背光显示屏。

The basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.

文中对汽车碰撞安全性的设计理论和方法进行了归类和总结，其中包括经验法、解析法、多刚体动力学法、试验法以及有限元方法等；重点介绍了碰撞有限元法的基本理论和有关算法，涉及到有限元求解控制方程、单元离散、沙漏模态控制、时间积分、材料模型和应力修正、薄壳单元算法以及接触碰撞界面算法等，探讨了有限元计算中的材料模型参数获取技术，开发了相应的材料试验装置及材料模型参数反求软件，在此基础上进行了基本的碰撞仿真算例和试验对比研究；文中通过应用有限元方法研究了薄壁构件的碰撞吸能特性，指出了设计薄壁吸能构件时需要考虑的几个主要影响因素，即焊点、壁厚、横截面和预变形等；在关于车辆部件的碰撞安全性能设计中进行了吸能转向机构和自适应安全气囊的仿真研究，提出了吸能转向机构和自适应安全气囊的仿真研究方法；文中最后探讨了整车碰撞性能的设计与改进方法，提出了以理想碰撞特性为目标，采用分段加速度或者根据碰撞时间进行设计的反推设计法、部件吸能仿真优化设计法等量化设计方法，并通过综合应用文中所讨论的相关技术进行了整车碰撞性能的设计与改进实例研究，所选定的车型是大众化的普通轿车和碰撞安全性基础较差的微型面包车，研究结果表明，本文所提出的设计与改进方法是适用而有效的，具有重要的工程实用意义和价值。

In the situation, this paper brought up the risk analysis and evaluation method on the basis of intelligent control and network communication technology for Network Communication System. The risk analysis and evaluation of Network Communication System firstly discussed the character of network communication and its risk. At the following we estimate a risk evaluation model according the distribution of the systems risk by time and space. Otherwise, we combined Fuzzy Comprehensive Evaluation with Analytic Hierarchy Process, and set up the multi-grade fuzzy comprehensive evaluation model for Network Communication System.

该方案主要通过讨论网络通信系统及其风险的特性，根据风险的时间和空间分布规律，以"风险"为整个网络通信系统安全模型的评估和分析对象，确立网络通信系统风险分布的量化评估模型，同时，就不同区域和不同时段的风险通过引入层次分析的一般方法来确定它们的权重系数，最后，通过模糊综合评判法则对系统中模糊不确定性因素进行数学化的抽象，建立一个反映其本质特征和动态过程的理想化的数学评估模型。

By making up of time-frequency local property and multi-scale analytical capability of wavelet transformation and self-learning and prediction function of artificial neural network,chapter three develops a prediction model loose combining wavelet analysis and Radial Basis Functionsneural network,abbreviated as Wavelet-RBFNN.

第三章利用小波变换的时频局域化特性和多尺度分析能力及神经网络的自学习、预测功能，通过小波分析与神经网络的松散型结合方式，建立小波分析和径向基函数神经网络(Wavelet-RBFNN)预测模型。

There were internal relations between anamnesis and the complex of multi-basic Syndrome- types.

中风病多个证型的组合出现可能与患者的既往病史有一定的内在联系。

Merit Effect: The eye a skin of comprehensive improvement, aim at the eye a problems, such as anasarca and thin crease...etc. effectively, provide the multi-function nursing for a delicate skin of eye, the valid cancellation years trace.

功效：全面性改善眼周肌肤，有效针对浮肿、黯沉、细纹等眼部问题，为眼部幼嫩肌肤提供多功能护理，有效消除岁月痕迹。

An anatomization on the relative analyzed results is also provided. It is found that the modeling results fit the water monitoring results well with efficiency value greater than 90% and multi-year average relative error value of 3.6%. The case study indicates that the runoff-evaporation hydrological model w...

在阿克苏河流域平原区1980-1995年逐月水量平衡研究中，模拟结果比较符合研究区水盐监测的结果，模型效率系数超过90%，多年平均相对误差仅为3 6%，证明模型在干旱区具备很好的模拟精度，在我国西北内陆干旱区绿洲有进一步应用的前景。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。