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using numerical analysis
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  进行数值分析
     An approximately exponential behavior of the efficiency and the series resistance of solar cells has been deduced using numerical analysis of I-V characteristics.
     对太阳电池的I—V特性进行数值分析,证明效率和串联电阻呈近似指数关系。
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  “using numerical analysis”译为未确定词的双语例句
     Using numerical analysis and visual technology, the parameters of the known Rayleigh van der pol equation are discussed in detail The relation between the limit circle and chaos strange attractors is found
     通过数值分析及科学可视化技术 ,对著名的 Rayleigh Van Der Pol方程的参数进行较详细的讨论 ,获得该方程的混沌吸引子与极限环的关系 .
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     In this paper, base on engineering practice, introduce the procedure of solving the stress and deformation of T beam using numerical analysis of finite element method, And the equivalent load application in the finite element method.
     结合实例介绍利用有限元数值分析法验算 T梁应力和变形等问题的具体过程 ,以及等效荷载法在有限元中的应用
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     Through analysing the principles and characterisics of relieving grinding of hob, an accurate calcultion method of axial profile of grinding wheel for relieving ZC_1 wheel hob has been presented using numerical analysis, progressive progression and optimization etc, and a software on microcomputer with multiple functions has been worked out as well. These provide reliable theoretical bases for the manufacture of ZC_1 wheel hob with high precision.
     综合分析滚刀的铲磨原理和特点,运用数值分析、逐步回归及优化等理论,提出铲磨ZC_1蜗轮滚刀所用的砂轮轴向廓形的计算方法,编制微机通用软件,为制造高精度的ZC_1蜗轮滚刀提供理论依据。
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     The“interface withdrawal”across the α/β interface in Cu:Cu-Al diffusioncouples during quenching has been investigated. Using numerical analysis basedon the Fick's second law,the non-isothermal diffusion modeling across the α/βinterface was carried out in comparison with the experimental results.
     本文研究了淬火冷却过程中Cu:Cu-Al扩散偶α/β界面的逆向迁移,α/β界面的变温扩散模型在Fick第二定律基础上用数值分析法进行了计算.
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     The worst-case time delay of two and three parallel interconnect lines in 0.25 μm technology is estimated using numerical analysis, and simple empirical formulas for time delay have been derived, which take into account both the drive resistance and load capacitance.
     利用数值方法分析了0.25μm工艺条件之下双平行线以及三平行线最坏情况下的时间延迟,得到了考虑驱动电阻以及终端负载影响的时间延迟简单经验计算公式。
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     By using the E.
     利用E .
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     Using the B. E.
     运用B.E.
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     On the Prediction of Modal Split by Using Numerical Method
     用数值计算方法估计结构的模态分裂
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     GENESIS ANALYSIS ON THE SLOPE USING NUMERICAL SIMULATION
     某滑坡的成因机制数值模拟分析
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     We calculate using a numerical method.
     本文用数值方法计算多相流动电磁波成像测井测量敏感场 .
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  using numerical analysis
Bifurcation diagrams developed using numerical analysis of the model have been drawn with two variable parameters, an exchange ratio, σ, and a volume ratio, κ.
      
Using numerical analysis we show that in a region of relatively low frequencies, when only one propagating wave exists in the wave conductor, one can formulate an analog of Saint-Venant's principle.
      
Further, in order to get the maximum annual sustainable yield, we optimize the harvesting using numerical analysis; in addition, we find that the harvesting timing affects the maximum annual sustainable yield.
      
The DEP forces for particles in a suspension were calculated using numerical analysis.
      
All of the methods attempt to approximate this relationship using numerical analysis methods.
      
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The“interface withdrawal”across the α/β interface in Cu:Cu-Al diffusioncouples during quenching has been investigated.Using numerical analysis basedon the Fick's second law,the non-isothermal diffusion modeling across the α/βinterface was carried out in comparison with the experimental results.The distan-ce of interface withdrawal depends on the initial concentration profile at thehigh temperature,the diffusion annealing temperature,the diffusion coefficients,the cooling rate and the slope of the solves...

The“interface withdrawal”across the α/β interface in Cu:Cu-Al diffusioncouples during quenching has been investigated.Using numerical analysis basedon the Fick's second law,the non-isothermal diffusion modeling across the α/βinterface was carried out in comparison with the experimental results.The distan-ce of interface withdrawal depends on the initial concentration profile at thehigh temperature,the diffusion annealing temperature,the diffusion coefficients,the cooling rate and the slope of the solves curves in the phase diagram.Thewithdrawal effect influences the shape of the concentration profile and the inter-facial concentration.

本文研究了淬火冷却过程中Cu:Cu-Al扩散偶α/β界面的逆向迁移,α/β界面的变温扩散模型在Fick第二定律基础上用数值分析法进行了计算.界面逆向迁移的距离和下列因素有关:高温时的原始浓度分布、扩散温度、扩散系数、冷却速率和相图中溶解度曲线的斜率.“界面逆向迁移效应”还影响了浓度分布曲线的形状和界面浓度.

In Sm-Co system, there are two kinds of important intermetallic compounds:SmCo_5 and Sm_2Co_17. SmCo_5, being CaCu_5 crystal structure, belongs to hexagonal system. Sm_2Co_17 is crystallized in two modifications, a low-temperature phase of the rhombohedral Th_2Zn_(17-)type structure, named as ;θ-phase; a high-temperature phase of the hexgonal Th_2Ni_(17-)type structure, named, as θ'.There is close relationship between θ,θ'and hexgonal type SmCo_5 in crystal structure. As soon as one third of Sm atom is replaced...

In Sm-Co system, there are two kinds of important intermetallic compounds:SmCo_5 and Sm_2Co_17. SmCo_5, being CaCu_5 crystal structure, belongs to hexagonal system. Sm_2Co_17 is crystallized in two modifications, a low-temperature phase of the rhombohedral Th_2Zn_(17-)type structure, named as ;θ-phase; a high-temperature phase of the hexgonal Th_2Ni_(17-)type structure, named, as θ'.There is close relationship between θ,θ'and hexgonal type SmCo_5 in crystal structure. As soon as one third of Sm atom is replaced by a couple of Co atoms in SmCo_5 and the replaced position is arranged as ABCABC....along the C axis the Th_2Zn_17 type of Sm_2Co_17 is formed. On the other hand if the replaced position is arranged as ABAB....along the C axis then Th_2Ni_(17-)type of Sm_2Co_17 is formed.According to the structural feature mentioned above it might be considered that two essential kinds of compound layers actually compose interphases SmCo_2(Φ),θ-Sm_2Co_17 andθ'-Sm_2Co_17 in Sm-Co system. One is SmCo_5 which is denoted as X. Another denoted as X' is Co_2Co_5 and derived from the X by replacing Sm with a couple of cobalt. It may be denoted as X_A', X_B' or X_C' respectively according to the replaced positions. The alternative of the replaced positions claims three different positions of Sm in hexagonal structure.By this method mentioned above the stoichiometric phases of SmCo_5, ;θ-Sm_2Co_17,and θ'-Sm_2Co_17 may be denoted as X, XXX_A'KXX_B'XXX_c' and XXX_A'XXX_B'. The pure Co which has the same structure of X may be denoted as X'.The Gibbs free energy expression of thermodynamic model in every phases of solution can be expressed according to the feature of crystal structure mentioned above.The Gibbs energy of φ phase, the composition of which ranges from pure Co(Co_2Co_5) to SmCo_5 can be denoted as following:G_(m~φ) is free energy of one mole of solutlon (Sm, Co_2)Co_5 is free energy of one mole of Co_2Co_5 is free energy of one mole of SmCo_5 I~φis the interaction parameter of one mole (Sm, Co_2)Co_5 solution y_x and y_x' are the mole fraction of either compound layer in φ phase, and Y_x+Y_x'=1.Because X' is formed by means of replacing one Sm atom X with a couple of Co atoms, according to the law of conservation of mass the following relations between X and the mole fraction of two compound layers y_x and y_x' should be obtained when the composition of solution is X (X' is supposed to be the mole atom fraction of Sm atom in the Solution of i phase in the following discussions).y_x=7X/(1+X) and y_x'=l—y_x (2)They demonstrate the relationship between chemical composition and structrual composition.The free energy of one mole atom can be demonstrated as:The Gibbs energy of θ and θ', the composition of which varies from SmCo_5 to Sm_2Co_17, may be demonstrated as following:i can be θandθ' in this equation. It is self-evident that as far as is concerned ,it shoul be when i is θ, it should be is concerned,it should be when i is θ, it should be when i is θ'. I~i is the interaction parameter of θ or θ'. This model is described by the system which is composed of two compound layers of XXX and XXX'.According to the feature of structure the relationship between chemical composition and structrual composition can be demonstrated as:The average Gibbs energy of one mole atom is:gy G_(Sm)~φ, G_(Co)~φ, G_(Sm)~θ and G_(Co)~θ of every phase. The calculation of phase equilibrium between φ and θ is carried out by the application of following equilibrium equations and experimental data:G_(Sm)~φ(X~φ,T)=G_(Sm)~θ(X~θT), G_(Co)~φ(X~φ,T)=G_(Co)~θ(X~θ,T)X~φ and X~θ in the equatiotis show the mole fraction of Sm in the solution when two phases are in equilibrium.By taking this parameter into equitions (3) and (6),and taking and as reference standard the curve of free energy can be drawn at different temperatures.By bringing this parameter into (7) and using numerical analysis method the equilibrium boundary can be calculated. Result shows that the model mentioned above is practical.

本文根据Co-Sm系中SmCo_5和Sm_2Co_(17)两个金属间化合物的结构特征,提出了两个相热力学模型,并利用此模型对以SmCo_5为基的固溶体和以θ-Sm_2Co_(17)为基的固溶体之间的相平衡进行了计算,初步表明此模型是基本可行的。

Experimental and theoretical results of Intense Relativistic Electron Beam (IREB) propagation in low pressure neutral gases are presented. For an electron beam of 660kV, 40kA, and 100ns in pulse width, FWHM, injected into a drift tube filled with H2 and N2,the pressure region in which IREB can be propagated efficiently is in P=(0.7-6.7)×102Pa, and a propagation efficiency up to 80% has been obtained. In very low pressure (P=13.3Pa), because of spatial charge effect the beam electrons are stagnated by a virtual...

Experimental and theoretical results of Intense Relativistic Electron Beam (IREB) propagation in low pressure neutral gases are presented. For an electron beam of 660kV, 40kA, and 100ns in pulse width, FWHM, injected into a drift tube filled with H2 and N2,the pressure region in which IREB can be propagated efficiently is in P=(0.7-6.7)×102Pa, and a propagation efficiency up to 80% has been obtained. In very low pressure (P=13.3Pa), because of spatial charge effect the beam electrons are stagnated by a virtual cathode and expand radially,and the propagation efficiency is low. At relatively high pressure, in addition to electromagnetic field and electron's Coulomb scattering by gas molecules, plasma instability would result in decrease of propagation efficiency. Simulations of charge neutralization using Monte-Carlo and current neutralization process using numerical analysis have been done, and explanations of experimental results have also been made.

本文给出了强流相对论性电子束(IREB)在低压中性气体中传输特性的理论和实验研究结果。660kV,40kA,脉宽100ns的电子束注入充有H_2,N_2的漂移管,稳定的传输气压范围在(0.7-6.7)×10~2Pa间,传输效率可达80%以上;极低气压时(P≈13.3Pa)由于空间电荷效应,束电子被虚阴极阻滞并径向发散,不能有效传输;而较高气压时,束电子除受自身电磁场作用及库仑碰撞散射外,等离子体不稳定性使束流传输效率明显降低。用蒙特·卡洛法及数值解析法对电荷中和、电流中和过程进行了模拟计算并解释了实验结果。

 
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