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Simplier and more efficient ion extraction methods for atomic vapor laser isotope separation AVLIS were evaluated using a 2-D electron-equilibrium model to compute and compare three electrostatic methods the parallel electrode method, the Π type electrode method, and the improved M type electrode method.

为探索用于原子蒸气激光同位素分离AVLIS的简单有效的离子引出方法,用二维流体理论电子平衡模型计算比较了3种静电场方法平行板电场法,Π型电极法,改进M型电极法计算发现,二维流体理论电子平衡模型并不能很好地描述Π型电极法对另外两种静电场方法,计算了不同外加电压、不同的初始原子密度和不同的目标同位素丰度等条件下的离子引出情况从计算结果可以看出,改进M型电极法不论是从离子引出时间还是从碰撞损失率,都要比平行板电极法好得多当外加电压较高或初始原子密度较高时,这种好处就更加明显因此,改进M型电极法是一种可供实际采用的比较好的静电场方法

In modern physics research, the calculus of variations has a broad application of law. As a solid mechanics, structural mechanics and computational mechanics of the theoretical foundation, it has important value in theory and practice on the mechanics; Variation method ruled out the perturbation of the restrictions can be widely used in many state-level and the state function in the calculation in the optical; Calculus of variations can be calculated with the parameters, we can guarantee the reliability of the results, can effectively reduce the workload of calculation, It can be said that the applications of calculus of variations are very broad.

在现代的物理学研究中,变分法有着广泛的应用:在力学上,变分法作为固体力学、结构力学及计算力学的理论基础,在理论上和实践上都有重要的价值;在光学上,变分法排除了微扰法的限制,可以广泛应用于诸多定态能级和态函数的计算中;在量子力学的应用中,具有可算出系统的参数,既可以保证计算结果的可靠性,又能有效地减少计算的工作量等的优点,可以说变分法的应用领域十分广阔。

The pressure drop of the compound tray can be regarded as consisting of dry plate pressure drop, clear liquid resistance, liquid surface tension resistance, and packing pressure drop. The model that has established can fairly predict the pressure drop of the compound tray, the value calculated by the model compared with that detected by experiment is less than 20%.

复合塔板的压降可认为由干板压降、清液层阻力、填料层压降和克服液体表面张力的压降四部分组成,所建立的压降计算模型,能较好地预测复合塔板的压降,计算值与实验值误差在±20%以内,可用于工程设计。

Based on the Saint-venant equations describing the channel flow movement, the nonlinear algebraic equations derived by the use of Preissmann weighted implicit four-point scheme are solved with the Netwon-Raphson method. A combined Gauss main-element elimination method with compress-storage technique is proposed. The relaxation iterative method for solving branch river networks is extended, which can turn the problem of any complex river networks into the problem of a series of single rivers. The coupling of hydraulic model with water quality model is built up. The combined model was applied to a large complicated river networks with numerical hydraulic structure which influenced by strong tide, storm and heave rain. Visualization of computational results is realized by means of MapInfo, which displays the computational results in fast, convenient and accurate way.

水力模型以描述河道洪水波运动的Saint-Venant方程组为基础,用Newton-Raphson方法直接求解按Preissmann加权四点格式进行离散所得的非线性代数方程组,提出了压缩存贮形式的Gauss列主元消去法并对数值解的收敛性进行了讨论;将支流流量的松弛迭代方法从树状河系推广到了环状河网,使任意复杂河网水力计算的问题都可化为一系列的单一河道的水力计算问题;建立了水力模型与水质模型的联接,初步应用于既有洪水、暴雨、强潮等综合影响,又存在多种水工建筑物及水力调度问题的大型复杂河网中的非恒定流水力、水质计算问题;利用MapInfo对计算结果的可视化进行了研究,有利于决策者快速、方便、准确地作出决策。

Firstly, the stope vacancy was monitored using CMS, taking cavity measured data as foundation, cavity three-dimensional model of the stope opening was created using Surpac software and gain the stope three-dimensional configuration and the actual boundary accurately. Then, the stope designed model and ore-rock interface digital terrain model were established according to the stope design material. Finally, using ore-rock interface DTM to cut cavity model or through Boolean calculation among the models, ore remains, mining total volume, mullock, backfilling, pure ore and dilution rate of stope N3-4 were calculated accurately, thus the large-scale stope mining index visible calculation was realized effectively.

采用CMS探测三维采场空区,以空区实测数据为基础运用Surpac构建采空区三维可视化模型,获取采场空区的三维形态和实际边界;运用采场设计资料,建立采场回采设计模型及矿岩边界模型,通过模型间的布尔运算,计算出采场存留矿量、回采总体积、采下废石量、采下充填体量、采下纯矿石量、回采总量及回采贫化率等,从而有效地实现了大规模采场回采指标的可视化计算。

After graduating from self-loving gradually VB programming, has automated the preparation of the Maori blessing calculator so that the company calculated the cost of a lot of convenience, to the AU after a computer automatically calculate coordinates substitute comparison table to improve efficiency and analysis Repair yields, in the end of August from the beginning of the use of Excel VBA turn carried by the use of Visual Basic programming, simply by the beginning of the coordinates of the aircraft in fixed and gradually perfect its functions, after numerous functions perfect, updated version , until now automatically value, take a few screens to install and keep other aircraft types, Cell coordinates and coordinate simultaneous COF, simultaneously hard and soft keyboard input, question is valueTo prevent failure, point and thread type of undesirable precise positioning the cursor, 4 Operational functions to four 40-inch production line, the company can save costs 6333822.717 RMB.

自毕业后逐渐爱好VB编程,曾为福大自动化编写毛利计算器,使公司的成本计算方便了许多,入友达光电后便有了使用电脑自动计算代替坐标对照表来提高分析效率及Repair良率,于8月底由刚开始的使用Excel所带的VBA转而使用VB编程,由刚开始单纯的坐标计算及机种固定逐步地完善其功能,经过无数次的功能完善、版本更新,直到现在的可自动取值、屏幕取数、设置其它机种并保存、Cell坐标及COF坐标同步计算、软硬键盘同步输入、待算值防呆、点及线类不良精确定位光标、四则运算等功能,以4条40寸生产线计算,可为公司年节省成本6333822.717RMB。

After graduating from self-loving gradually VB programming, has automated the preparation of the Maori blessing calculator so that the company calculated the cost of a lot of convenience, to the AU after a computer automatically calculate coordinates substitute comparison table to improve efficiency and analysis Repair yields, in the end of August from the beginning of the use of Excel VBA turn carried by the use of Visual Basic programming, simply by the beginning of the coordinates of the aircraft in fixed and gradually perfect its functions, after numerous functions perfect, updated version , until now automatically value, take a few screens to install and keep other aircraft types, Cell coordinates and coordinate simultaneous COF, simultaneously hard and soft keyboard input, question is valueTo prevent failure, point and thread type of undesirable precise positioning the cursor, 4 Operational functions to four 40-inch production line, the company can save costs 6333822.717 RMB, Amateur using VB programming staff prepared the examination system has been applied to AUO Xiamen plant, and is the level of expand to other plant.

自毕业后逐渐爱好VB编程,曾为福大自动化编写毛利计算器,使公司的成本计算方便了许多,入友达光电后便有了使用电脑自动计算代替坐标对照表来提高分析效率及Repair良率,于8月底由刚开始的使用Excel所带的VBA转而使用VB编程,由刚开始单纯的坐标计算及机种固定逐步地完善其功能,经过无数次的功能完善、版本更新,直到现在的可自动取值、屏幕取数、设置其它机种并保存、Cell坐标及COF坐标同步计算、软硬键盘同步输入、待算值防呆、点及线类不良精确定位光标、四则运算等功能,以4条40寸生产线计算,可为公司年节省成本6333822.717RMB,业余利用VB编程编写了员工考试系统,现已应用于友达光电厦门厂,并正水平展开到其它厂区。

Hypercube has many advantages, such as smaller diameter, simple routing algorithm, many parallel paths between any two nodes, and fault-tolerance, on the other hand that the Hypercube nodal degree increased logarithmetically to the number of nodes has limited network population. So we propose a constant nodal degree hierarchical topology to remedy the weakness of Hypercube and take advantages of Hypercube most. Given the definition of FCCN we analyse the basic properties including nodal degree , number of links , extensibility and diameter (maximum network communication delay). Also we proposed a simple and self-routing algorithm applied in FCCN. Although the self-routing algorithm is not optimal, but at more than 82% case it can get the shortest path, and the percent is larger and larger increased with network levels. By the self-routing algorithm the internodal distance is calculated to evaluate the network communication delay more clearly. The average internal distance is in order of the cubic root of the network population that is almost same as logarithmetically relation in a few thousands. FCCN is a highly scalable network due to its recursive construction.

首先在比较了基本互连网络的基础上,看到超立体网络的杰出性能,包括网络直径小、寻路算法简单且为自寻路算法、容错能力好等等,但是由于其节点度随网络的规模的增加而按对数关系增长,使得超立体网络的应用规模受到极大限制,所以为了能最大限度利用超立体网络的优点的同时弥补其节点度方面的不足,作者提出了节点度等于常数4的FCCN网络结构,来最多地利用立方体网络的优点;然后在对FCCN网络进行严格的定义后,分析了网络的节点度、链路数、延伸特性、网络的直径(决定网络的最大通讯延迟)等,并提出了适于FCCN网络的简单的自寻路算法,计算自寻路算法可得到最短路径的比例,看到在多于82%以上的情况自寻路算法都是最优的,而且比例随网络层数的增加而增加;应用所提出的自寻路算法计算了可以更加准确反映网络通讯延迟的参数—网络平均节点距离,计算得到此参数与网络大小的立方根成正比,此比例关系在网络的规模在几千节点以内与对数关系的网络几乎一样;FCCN网络是一高度可扩展结构,这是因为FCCN的递归构成方式,使得网络在增加节点时其原有的拓扑结构可以保持不变,不需对网络进行重新设计,为网络的实用扩展提供了条件;理论分析得出FCCN网络是一种高度可扩展高性能网络的结论。

By theory analyzing and example calculation and comparison, the conclusion is obtained that the traditional inferential method can be applied in the design flood peak flow calculation, yet it cannot truly express the runoff process of the rain drainage inlet, the instantaneous unit hydrograph depending on the real and actual datum is different to be used in the runoff discharge hydrograph calculation, and the no linearity reservoir means and the isochronal method have some physics base and its parameters easily evaluated and its runoff discharge hydrograph still more is close to practice.

5通过城市雨水地表汇流特性及计算方法的理论分析、实例计算和对比得出:传统推理法可应用于城市设计洪峰流量的计算,但不能真实地反映雨水口径流流量过程;瞬时单位线法等对实测资料有较大依赖,难以应用于城市径流流量过程线的计算;非线性水库法和等流时线法的径流流量过程线接近实际。

The main research contents are as follows:1. Through massive calculation, analysis and comparison, sum up the similarities and differences between the special-shaped cross sections and rectangular cross sections in mechanical features, between reinforced concrete special-shaped columns and rectangular columns in load-bearing capacity, ductility performance and provide necessary basic concepts and data for further understanding the characteristics of the special-shaped columns;2. Through massive elastic calculations and elasto-plastic analysis, under the preconditions of satisfying the code's requirements for axial compression ratio, limit value of lateral displacement and load-bearing capacity of normal section,oblique section and beam-column joint, under circumstances of different intensity of earthquake, structure dead weight, sort of site and column grid bay dimension, the variation regularity of maximum suitable height of structure, and thus sum up the maximum suitable height of structure for code for the purpose of macro-control while deciding the design scheme;3. Make a preliminary study on the stress feature of reinforced concrete special-shaped column and Z-shaped column of which the ratio of limb length to limb thickness is between 4~5 ,and the preliminary design method is suggested;4. Through elato-plastic time history dynamic analysis of typical projects, check up the weak storey of the special-shaped column structure and yielding, breaking and collapse mechanism to satisfy the earthquake resistant requirement to buildings of remaining stand under strong earthquake;5. Derive for project use simplified calculation formula of vibration period, suitable vibration period, suitable rigidity of special-shaped column structure through theoretical analysis, and provide an easy and practical method for deciding the structure scheme economically, safely and reasonably;6. Based on the study achievements in theory and massive analysis and calculations of this paper, sum up the regularities of inner force, deformation of special-shaped column structure and seismic conceptual design, and thus the suggection of seismic design of special-shaped column structures is presented.

本文研究的主要内容如下:通过大量的计算、分析和对比,总结出异形截面与矩形截面在力学特性、钢筋混凝土异形截面柱与矩形截面柱在承载能力、延性性能等方面的异同,为深入了解异形截面柱的特点提供必要的基本概念和数据;通过大量的弹性及弹塑性计算分析,在满足规程对轴压比、侧移限值及正截面、斜截面、节点承载力抗震验算要求的前提下,在不同抗震设防烈度、结构自重、场地类别及柱网开间尺寸情况下最大适宜高度的变化规律,并在此基础上总结归纳出异形柱结构的最大适用高度规定,可用于规程,以便于在确定方案时起到宏观控制的作用;对肢长与肢厚比在4~5的钢筋混凝土异形截面柱及Z形柱的受力特点进行初步探讨,提出初步的设计方法;通过对典型工程的弹塑性动力时程分析,检验异形柱结构的薄弱层及屈服、破坏、倒塌机制,以达到建筑物大震不倒的抗震设防要求;通过理论分析,推导出异形柱结构自振周期,以及适宜自振周期、适宜刚度的工程实用简化计算公式,为经济、安全、合理地确定结构方案提供简便实用的方法;在本文理论分析、计算以及大量的研究成果基础上,总结归纳出异形柱结构内力、变形的规律及抗震概念设计内容,并在此基础上提出异形柱结构的抗震设计建议。

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推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力