查询词典 numerical system

The influences of seasonal factor on the safety of grounding system were analyzed in numerical method.

采用数值计算方法分析了季节因素对地网安全性能的影响。

The vibro-impact systems are familiar with the non-smooth dynamic systems.The dynamics research of the vibro-impact systems not only is significant in theory but also has practical values in engineering.Firstly,using the Poincaré map method,we get an existent criterion of single impact period-n motion in a two-degree-of-freedom vibro-impact system with damper.It is shown that our conclusions are valid through the numerical simulations.Moreover,the satiability of periodic motions is studied and the correspon...

基于Poincaré映射的方法，通过解析的方法导出了一类具有阻尼的两自由度碰撞振动系统的单碰周期n次谐运动存在性判据，经过数值模拟验证了理论分析的正确性，并给出了分析其稳定性的判别公式，通过数值模拟，讨论系统的局部分岔与全局分岔，同时比较了系统参数变化对其周期运动的影响，发现在强阻尼、弱激励、小质量比、较大恢复系数下系统将会出现较多的有规律的周期碰撞。

In a numerical control machine tool, servo system is an important part.

在数控机床中，伺服系统是重要组成部分。

A numerical calculation for the conversion rate of calcium superphosphate products was derived by the a-nalysis of factors on the conversion rate,and a method for the determination of ratio of phosphate ore incomplete decomposi-tion and available phesphate degeneration induced by sesquioxide was put forward,which provided a path for the predictionand adjustment of the process system.

对影响普钙产品转化率的各种因素进行了分析，利用MATLAB 软件包得到了转化率的计算公式，提出了确定未分解磷矿的比例和由倍半氧化物引起的有效磷退化幅度的方法，为生产系统的预测和调整提供了一种途径。

By the experiments, this thesis further verified the credibility of numerical simul- ation and provided a certain theories and practice basis for application of radiation ceilings system.

通过实验进一步验证了数值模拟结果的可靠性，并得出冷却顶板空调系统节能、舒适的空调系统，为其应用提供了一定的理论和实践依据。

The models and analytical methods presented above were verified by some numerical examples, and were applied successfully to the Huanghe XiaoLangDi Hydro-Junction Project softy monitoring system.

所建立的计算模型和分析方法，通过了数值算例的验证，并成功地应用于小浪底水利枢纽工程安全监控系统中。

Solar silicon crystal growing furnace has two systems and three brands and all uses high performance CCD camera video vision sampling technology and PAC full automatic SCADA numerical control system of American Rockwell Automatic Co.,Ltd, and is suitable for 18/20/22 inch heat station and CZ method 6-8 inch IC circuit level and solar energy level silicon single crystal ingot.

硅单晶生长炉具有两大系列三个品种，全部采用高性能CCD影像视觉采集技术和美国Rockwell Automation公司PAC全自动SCADA数字控制系统，适用于18/20/22英寸热场和直拉法拉制6～8英寸电路级和太阳能级硅单晶棒。

Finally, using the design of the attitude control system for a spacecraft numerical simulation, and simulation results are analyzed.

最后，运用所设计的姿态控制系统对某航天器进行数值仿真，并对仿真结果进行了分析。

In the aspect of the study of the application of HHT method, This dissertation has done three part of jobs: first, the Elcentro strong ground motion which is in common use in earhtquake engineering is analyzed by HHT method, getting its amplitude-frequency-time distribution and the comparison between the HHT marginal spectrum and Fourier spectrum is also made; second, the typical nonlinear system defined by the Duffing equation is analyzed by HHT method, getting its numerical value's amplitude-frequency-time distribution and the comparison between the HHT marginal spectrum and Fourier spectrum is also made; third, define the stationary degree of non-stationary signals making use of 3-D time-frequency spectrum and marginal spectrum, the stationary degree curve of Elcentro seismic recording is protracted according to its defining formula, the stationary degree curve of Elcentro seismic recording which change with time is protracted according to similiar definition.

在HHT方法的应用研究方面，本文做了三部分的工作：首先，利用HHT方法分析了地震工程中常用的Elcentro非平稳强震记录，得到了该记录的振幅－频率－时间分布特性，并将得到的边际谱与傅立叶谱做了比较；其次，应用HHT方法分析了典型的非线性系统－Duffing方程，得到了该方程数值解的振幅－频率－时间分布特性，并将得到的边际谱与傅立叶谱做了比较；最后，利用三维时频谱与边际谱定义了非平稳信号的平稳度，并依照其定义式绘制了Elcentro地震波记录的平稳度曲线，依照类似与依赖与频率变化的平稳度定义，初步尝试编程绘制了Elcentro地震波随时间变化的平稳度曲线。

The uniform stationary states, the traveling wave solutions and the STC patterns are obtained with the change of the system parameters in numerical simulations.

第一部分介绍了时空混沌、耦合映象格子模型及时空混沌控制与同步的研究进展，概述了光学斑图动力学研究已取得的成果。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。