查询词典 numerical system

Furthermore data assimilation experiments are conducted with MM5 Adjoint-model Assimilation System made by adjoint codes. With a case of heavy rainfall taking place from 00h July 23 to 00h July 24,2002, several numerical simulation experiments of different schemes are performed. The results are as follows. MM5 Adjoint-model Assimilation System not only can improve the initial field effectively and promote the coordination with the model but also can enhance the forecast on the precipitation and other elements. The assimilation of CDW has an improvement on quality of upper wind. The effect of direct numerical simulation with utilizing the CDW to amend the initial field gains the advantage over the one not.

结果表明，MM5伴随模式同化系统能有效改善初始场与模式的协调能力，提高模式对于降水场和其它要素场的预报；使用云导风资料修正初始场后直接模拟的效果比未使用时直接模拟的效果要好，对部分区域的强降水预报精度有一定程度的改善；使用伴随模式同化系统后，加入云导风资料的同化试验对其它要素的改善与直接同化常规资料的效果相比，改善优势不明显，但从各要素的误差来看，对于风场的改善最好。

In the paper, the researches and conclusions are:The basic theory and technique ofgeography information system, Introduce the history of the GIS technique developmentand it develops the trend, the GIS modernizes the meaning of the construction and thepurpose and the meaning of the topic researches to the our army artillery.The design ofartillerist numeric map, Make use of the soft strong graphics function of the SuperMapgeography information system, from how made the numerical map of artillery tocommence, carried on the processing and processed the piece to the artilleryappropriative paper quality diagram to manufacture the numerical map of artillery.Themold of choosing the position of artillerist and excavating the position of spacedata;Rules of space clustering analyzing and space relationship on the basis ofmathematics configuration;Choosing the path of positing convert;optimalpath arithmetic on the basis of chart theory and realize optimal path analyze.

论文研究内容有：地理信息系统的基本理论与技术，介绍GIS技术发展的历史及其发展趋势，GIS对我军炮兵现代化建设的意义和课题研究的目的及意义；炮兵地图数字化设计与制作，利用SuperMap地理信息系统软强大的制图功能，从如何制炮兵数字地图入手，对炮兵专用的纸质地图进行处理和加工件来制作炮兵数字地图；炮兵阵地选取分析模型、阵地空间数据挖掘模型的建立和挖掘过程，基于数学形态学的空间聚类分析法、空间关联规则法的挖掘模型；阵地转移的路径选择，对炮兵阵地转移路径进行分析，基于图论中的Dijkstra最优路径算法，实现转移最佳路径分析。

To assure parts' machining precision and to improve productivity, touch probe is used to inspect cylinder of parts on machining centers, thus coordinate of points on features are acquired from numerical control system by a data collecting program, and cylindricity error is calculated by computer. This method has broken the restriction of probe's macro processor that couldn't work out cylindricity error. Data saved in computer are beyond the limited memory of numerical control system, which improves operation speed.

为了保证零件加工精度和提高生产率，在数控加工中心中采用触发式零件检测测头对被加工件的圆柱面进行在机检测，并利用数据读取程序从数控系统内部提取被检测点坐标信息，在计算机内部完成圆柱度误差的计算，克服了零件检测测头自带宏程序无法对圆柱等被测特征进行误差运算的局限性；并且检测数据存储于计算机内，不再受数控系统内存小及运算速度慢的限制。

This text to 1 kind from calculator automatically control and carry on the electronics dollar that the data collect a spare part a total quantity Fu to shine on the spot test system to carry on pulling a description, and pass application that system to the CMOS numerical electric circuit CC4069 carry on with total the amount of synchronous electricity parameter's on-line diagraph, and radiate a quickly collect of the countermarch fire data, study pull CMOS numerical electric circuit a total quantity Fu shine on on-line Fu to shine on to respond to characteristic and Fu to shine on behind fast time back a fire effect.

本文对一种由计算机自动控制并进行数据采集的电子元器件总剂量辐照现场测试系统进行拉描述，并通过应用该系统对CMOS数字电路CC4069进行与总剂量同步的电参数在线测量，以及辐射后退火数据的快速采集，研究拉CMOS数字电路总剂量辐照在线辐照响应特性和辐照后快速时间退火效应。

Based on rubbing model of a two-disk rotor-stator system with consideration of both rotor and stator dynamics,a numerical integration program is applied to numerical simulation and analysis of the nonlinear dynamics of this system,such as bifurcation,Poincare section map,trajectory of axes,phase trajectory,frequency spectrum diagram and time response.

基于一新型径向-轴向复合碰摩双盘转子-机匣力学模型，利用数值积分和Poincare映射方法，对转子-机匣系统由于径向-轴向碰摩故障导致的非线性动力学行为进行了数值仿真研究，给出了系统响应随转速和偏心量变化的分岔图和一些典型的Poincare截面图、相轨图、轴心轨迹、幅值谱图和时域响应等。

Based on the study of a discrete chaotic system of numerical solution and graphical simulation, while for discrete time-delay chaotic system a numerical simulation procedure.

详细说明：摘要：基于研究了离散混沌系统的数值解法和图形仿真，同时针对离散时滞混沌系统给出了数值仿真的程序。

The powerful function of a new computer language MATLAB, produced by the America Mathworks company, is the mathematical software system for the calculation in science engineering. It can efficiently solve problems in science and engineering such as numerical linear hypercomplex system, digital approximation, optimization, numerical quadrature etc. It also has characters of beautiful interface and convenience for users.

MATLAB是Mathworks公司推出的适用於科学和工程计算的数学软件系统，可高效地解决数值线性代数、微分方程数值解、数值逼近、最优化、数值积分等科学和工程问题，且具有可视化图形处理、使用方便、开放式多功能於一体的新一代计算机语言。

Uses the numerical control technology the control system to be called the numerical control system.

采用数控技术的控制系统称为数控系统。

It is proved that equilibrium solutions of this differential system are solutions to the complementarity problem and a numerical algorithm is given based on the numerical integration of the system of ordinary differential equations.

在一定条件下，证明了微分方程系统的平衡点是非线性互补问题的解并且基于一般微分方程系统的数值积分建立了一个数值算法。

Aiming at simpling the structure of numerical control system, and decreasing the cost and difficulty of development, a numerical control system based on the programmable logic controller was designed for a stereolithography apparatus machine with utilizing the prominent feature of the easy development and higher reliability of the PLC.

为简化光固化快速成形数控系统的结构、降低系统开发的成本和难度，结合所设计的成形设备特点，利用可编程逻辑控制器具有的开发简单、性能可靠等优点，设计了一个基于PLC的光固化快速成形数控系统。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。