基于计算机的
- 与 基于计算机的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Based on the vulnerability analysis to the carrier plane group and aimed to the issue of quantitative,the damage effectiveness of submunition against carrier plane group is analyzed,the model of pixel-simulation is established,and the computer simulating calculation of damage effectiveness of the shipboard aircraft group under the attacking of many missiles is carried out.
是子母弹对航空母舰毁伤效果分析的第三部分。在对舰载机群进行易损性分析的基础上,针对子母弹战斗部攻击舰载机群毁伤效果的定量分析问题,提出了基于像素仿真的模拟方法,实现了多弹攻击下的舰载机群毁伤效果的计算机模拟计算。本研究对航空母舰毁伤效果的评估和火力计划方案的制定具有重要指导意义
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Aim of the article was to provide a new approach of the fingerprint diagram research for TCM by means of spectrometry, which was capable of indicating the character of TCM. For the purpose of getting indication of NIRDRS convolution fingerprint diagram, the visualization technology was adopted to display the information which have been processed by convolution transform, then color-coded image was displayed in computer and the similarity coefficient was worked out between the fingerprint diagrams by cosine formula. Part one Theory and system design The spectrometry (UV/Vis, NIR, IR) is disadvantageous in the fingerprint analysis of complex systems both its difficulty of specificity and the similarity of TCM.
本文的研究目标是采用光谱手段,建立能够标示中药特性的指纹图谱技术,为中药指纹图谱研究提供新的思路和方法:通过采集中药的光谱信号,结合有"数学显微镜"美誉的小波变换技术,对光谱信号进行数据挖掘,捕捉和研究物质对光吸收特性的变化,大幅度增加可供利用的信息;同时运用科学计算可视化手段及伪彩色图像处理技术,得到基于虚拟直观计算机图像信息的中药光谱指纹图谱,并将该指纹图谱应用于药物的鉴别分析。
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In this paper, the modeling theory of multi-rigid-body dynamics was thoroughly investigated in order to make up the shortcoming in the above modeling method. The major research achievements are as follows:①Based on the matrix of direction cosine between the body-fixed base and the reference base, and Poisson equation of a rigid body rotating, the coordinate transformation method for the modeling of treelike multi-rigid-body dynamics is derived. The method is very routinization and easy to use the computer to carry on the symbol derivation.
本文针对上述建模方法存在的不足,深入地研究了多刚体系统动力学的建模方法,并将所研究的新方法应用于惯性振动设备的建模,取得的主要研究成果如下:①基于刚体连体基关于参考基的方向余弦矩阵和刚体转动的Poisson方程,导出了建立树形多刚体系统动力学方程的坐标变换法,其过程极其程式化,便于利用计算机进行符号推导。
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In this thesis, with the aid of the method of reconstructive direction cosine matrices of the analysis and synthesis of spatial mechanism, the more overall and systematic theoretical research is done about trident-bar universal joint and drawn some useful conclusions about kinematics analysis, dynamics analysis, kinematical precision analysis, vibration analysis, simulation and experimental results analysis, mechanism type selection analysis based method of fuzzy distinguishable pattern, integrated designing prototype system.
本文以改造的方向余弦矩阵为数学工具,以三叉式万向节为研究对象。进行了机构有关的解析求解、仿真和试验结果分析,基于模式识别技术的机构选型及机构的集成设计原型系统,得出了以下结论:(1)采用改造的方向余弦方法适用于空间机构的运动求解及动力求解。它的特点是解析明了,以矩阵方式体现,适合计算机求解。并以万向节为实例进行了万向节的详细的运动分析,建立了求解的各个变换矩阵,得出了机构的详细的运动关系。
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The main objective of this dissertation was to develop methodologies with capability of engineering application for simulating flow in fractured rock using discontinuum models. The study work includes three parts. In the first part, numerical methodology of three-dimensional discrete fracture network model casing on hybrid BEM-channel was presented, and the technique for improve the model's computing efficiency was also studied. Firstly in this part, computer simulation methodology based on the Baechermodel for generating network of discrete fractures was presented, which includes the follow details: probability distributions of fracture density,orientation, trace length, size, and aperture and estimation of their statistical parameters; stochastic models of fracture network; Monte-Carlo's simulation method; numerical simulation procedure and technicality.
给出了离散裂隙网络模型所依据的基本假定;发展了基于Baecher模型的离散裂隙网络计算机随机生成技术:详细地推导了单裂隙渗流和多裂隙相交网络渗流的边界单元法公式,发展了离散裂隙网络中稳态渗流的边界元数值技术,并且讨论了相关的具体数值技术细节,如角点的处理方法,单元的自动剖分等:描述了混合边界元—管流模拟方法及其数值实现;研究了裂隙网络的简化方法,并针对裂隙网络边界元法的特点提出了一种改进的分块三角分解法。
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The Periscope Drawtube will be bent because of the water resistance in sailing and this bend will cause the error of star measurement. Due to its especial structure, contactless measurement is the only way to measure its bend degree. First this paper introduces the method by linear array CCD based on structure and light path; Second it expatiates linear array CCD work principle and driving scheduling with example of TCD1501C and the driving circuit by CPLD. The output signal of linear array CCD includes common disturbance so the differential amplifier is needed. In order to make the signal adapt to computer processing, a threshold circuit with Schmitt characteristic and the data process following threshold are given. At last, some key problems in application are given.
潜艇潜望镜的镜筒在航行时受到水的阻力会产生弯曲变形,这种变形会造成潜艇对星体测量的误差;由于镜筒结构的特殊性,对其弯曲程度的测量只能采用非接触方法;首先从结构和光路方面介绍采用线阵CCD作为检测元件实现对镜筒弯曲程度的测量;其次以东芝公司的线阵CCD(TCD1501C)为例阐述了其工作原理及驱动时序的控制要点,并介绍了基于可编程逻辑器件的线阵CCD的驱动电路;线阵CCD输出的信号中含有共模干扰,必须采用差分放大器将其抑制;为将信号转化为适合计算机处理的数字信号,文中给出了有一定实用价值具有施密特特性的二值化处理电路及二值化后的数据处理过程;最后阐述了在实际使用中的一些关键问题。
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The theme uses structure design of WUHAN DAMING company OAS for example, to actualize GIS and OAS integration exploitation, preferring two settlement ways: firstly, if you wants GIS and other computer system for integration no suture, you must use integration exploitation of GIS fully, and use tools software of GIS and graphic exploitation language in integration re-exploitation;then it is fully to utilize space data, to achieve effective assistant decision-making system;and, to research and to design database of based on metadata technique, distributed data management and share technique.
论文以武汉达明公司的办公自动化系统的结构设计为例,对实现GIS与OAS的集成开发,提出了两种解决办法:一是如果要让GIS 可以很方便地与各种计算机信息系统进行一体化的无缝集成的话,就要充分地利用GIS 的集成开发方式,结合GIS 工具软件与可视化开发语言进行集成的二次开发;二是要充分地利用空间数据,实现有效的辅助决策系统,对基于元数据技术的、分布式的数据管理与共享技术的数据库系统进行研究和设计。
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In order to get accurate measurement result,this paper proposes an error dynamic amendment method and uses it in the online dynamic measurement system of clean surface composite board.
给出一种误差动态修正方法,该方法基于对额外设置的基准块的动态测量及计算机对数据的自动修正,在具有光洁表面的板材厚度的在线测量中得到了较好地应用。
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The range of recording distance is given by formula.
本文简要介绍了同轴数字全息的基本概念、原理、方法及其在粒子直径测量中的应用,主要通过计算机仿真研究了记录距离和粒子浓度这两个因素对粒径测量精度的影响,给出了记录距离的范围,同时提出了基于灰度梯度提取粒子边缘进行粒径测量的方法,并通过实验进行了验证。
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In this paper the accuracy of the precision engineering control networks (Trilateration and Triangulation), established by using modern electronic distance measuring instruments and theodolites is discussed, and the method of optimization design is proposed that is based on the theory of probability and error propagation and applying the error ellipses to analyze the position accuracy of the points.
本文论述用近代光电测距仪及经纬仪建立的精密工程控制网的精度,并提出基于概率论与误差传播理论的、用误差椭圆来分析点位精度的优化设计方法。建议的平差计算与精度评定方法以专用的计算机程序来完成。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。