The elastic wave element suppresses variation in propagation characteristics of the elastic wave and exhibits high reliability.
该弹性波元件抑制弹性波的传播特性的变动，具有高可靠性。
The wave pressure is one of important loads in sluices design. The calculating methods of wave element influence the magnitude of wave pressure.
波浪压力是水闸设计中必须考虑的荷载之一，选择较为合适的波浪要素的计算方法，直接影响着波浪压力的大小。
Wave element is an important parameter for port engineering design and wave mathematical model analysis and calculation are key measures for wave element analysis.
波浪要素是港口工程设计重要参数，波浪数模分析计算是波浪要素分析中的重要手段。
Compared with other sediment transport rate calculation models, the method was set up with higher reliability and accuracy and without wave measurement and surf wave element calculation.
与现有主要几种计算沿岸输沙率的数模和方法进行计算比对，本文模式的计算结果有较好可信性与准确性。
With the software we design reflecting computer optical element in light wave band and microwave band, and transmission computer optical element in light wave band.
利用这个软件设计出了光波波段和微波波段的反射式与光波段的透射式计算机光学元件。
In calculation, adopted load-unload criterion of stress wave propagation was to decide load-unload state of element and to adjusts and transfers internal stress for tensile failure element as well.
计算中用应力波传播的加卸载判别准则来决定单元的加卸载状态，对受拉破坏单元进行内部应力调整和应力转移。
The greater the amplitude change of head wave of transverse velocity is, the severer the damage is, the later the arriving time of the first wave hollow and the longer the damaged element will be.
当脉冲作用点在受损单元的起始位置时，脉冲作用点横向速度波首波波幅变化越大，损伤越大，脉冲作用点横向速度波的第一个波谷到达时间越晚，损伤单元越长。
Finite element method is used in the study of nozzle damping of instable combustion in a solid rocket motor. Wave decline method is used in the experimental research.
应用有限单元法研究固体火箭发动机不稳定燃烧中的喷管阻尼，并用波衰减对比法进行了试验研究。
The results for element input impedance, radiation efficiency of space wave, directivity and radiation pattern are presented.
其结果包括阵列单元的输入阻抗、空间波辐射效率、方向性系数和辐射方向图等。
Model parameters have the important effects on three-dimensional distinct element code (3dec) modeling of the stress wave propagation and attenuation in jointed rock masses as well as other codes.
与其他数值软件一样，用三维离散元程序(3dec)模拟应力波在节理岩体中的传播和衰减时，模型参数对模拟结果有很重要的影响。
The finite element method was used to calculate elastic wave propagation in the medium.
本文采用有限元素法计算弹性波在介质中的传播。
The formulation of thin-layer element method was derived, the wave propagation process was simulated by the method, and a calculation example was given.
推导了冲激荷载作用下薄层单元法的基本计算公式，运用这一方法对土中的波动传播进行了模拟，并给出了计算实例。
The irregular distribution of the wave load along the erect riser makes the computation of equivalent wave nodal force difficult when applying Finite Element Method to analyze risers strength.
波浪荷载沿垂直立管的分布是不规则的，这对工程中用有限元法分析立管强度进行等效波浪结点力的计算带来困难。
In order to reduce the effect of wave reflecting on artificial boundary, transmitting boundary and semi-infinite element are respectively used to treat the lateral and underside boundaries.
考虑到人工截断边界上波反射对计算结果的影响，分别用传递边界和半无限单元来处理侧面和底面边界。
The CMOS amplifier of chopped wave stable zero calculator has been used as a key element to acquire signal of location.
本仪器采用CMOS斩波稳零运算放大器为关键性元件，获得对信号无失真采集。
On the basis of the finite element solution to elastodynamic problems, we propose a new method of finite element elastic wave migration.
本文在弹性动力学问题的有限单元解的基础上，提出了一种弹性波偏移的新方法——有限单元法弹性波偏移。
According to the perturbation theory, a distribution law of matrix element in secular equation is discovered in degenerate state and wave function property of the hydrogen atom.
根据简并态微扰理论和氢原子波函数的性质，得到久期方程中微扰矩阵元的分布规律。
In this paper, the finite and infinite element method in numerical analysis for wave forces of three dimensional problem is examined.
本文研究了三维情况波浪力数值分析中的有限元-无限元方法。
In this paper, for solving the parameter problem of two dimensional wave equation, the method of Finite Element and the Pulse Spectrum Technique, i. e. the iterative process are used.
本文针对求解二维波动方程的参数问题，利用有限元方法把波动方程反问题转化为有限元反问题，并利用脉冲谱技术，即一个迭代过程进行求解。
The joint element matrix equations were developed for various structural configurations and wave types.
针对各种不同的结构连接形式和振动波形，分别推导了各种节点单元矩阵的表达式。
A dynamic mapping infinite element is presented for characterizing the waves with different wave Numbers in homogeneous foundation and simulations of propagation behavior in different media.
本文提出了一种映射动力无穷元，这种单元不仅可以表征在均匀介质中传播的不同波数的波，而且可以模拟地基中不同介质内的波的传播特性。
Finite element method las been practically applied to the forward modeling of elastic wave. But its shortcomings, such as large storage needed and slow calculation, remain.
用有限元法做弹性波正演模型计算已进入实用阶段，但有限元法所要求的大存储量和计算速度慢的缺点依然存在。
The reflection phase property and surface wave dispersion are analyzed using finite element method.
用有限元方法分析了其反射相位特性及表面波传输特性。
The finite element method has been widely used in analysing wave propagation problems. Which degree of accuracy such an analysis can be obtained?
有限元法用于分析波的传播问题已日益广泛，它可能达到的程度已成为现在十分关心的课题。
According to wave motion theory, finite element mesh size satisfying the needs of engineering calculating precision is relevant to the upper limit of frequency range of random (response) problems.
根据波动理论，满足随机响应工程计算精度要求的有限元网格大小与待求高频随机响应问题的频率范围上限有关。
A local transmitting boundary is combined with a lumped-mass finite element technique to form a mechanical model simulating the near field steady wave motion.
本文将局部透射边界和集中质量有限元技术结合起来形成一个模拟稳态近场波动的力学模型。
A time domain boundary element model (BEM) is presented for wave propagation problems in layered media.
建立了研究层状介质波动问题的时域边界元计算模型。
Finite element method is an useful tool for modeling seismic wave in complex medium, it simulates seismic wave propagation quite realistically and displays seismic wave fields in quite detailed way.
有限元法是复杂介质地震模拟的有力工具，它能比较客观地反映地震波的传播过程，比较细致地再现地震图像。
In this paper, a discrete local transmitting boundary is combined with a lumped-mass finite element technique for simulating steady wave motion in the viscoelastic layered medium.
本文将离散的局部透射边界与集中质量有限元方法相结合，用于模拟粘弹性成层介质中的稳态波动。
In this paper, a discrete local transmitting boundary is combined with a lumped-mass finite element technique for simulating steady wave motion in the viscoelastic layered medium.
本文将离散的局部透射边界与集中质量有限元方法相结合，用于模拟粘弹性成层介质中的稳态波动。
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