查询词典 standing wave

However, various methods are used to suppress surface waves from shooting to receiving in the process of seismic survey, thus research should be carried out in the following aspects:① joint inversion with surface wave, refraction first break and microlog data;② offset range and the relation between group interval and surface resolution suitable for use in surface wave analysis;③ the influences of lateral relief of array on propagation of surface waves;④ method for Hi-Fi purification of surface wave signals;⑤ method for extracting dispersive curve through time-frequency analysis;⑥ forward modeling and in-version methods of surface wave in view of three-layer structure.

但石油勘探从激发到接收，都采取各种方式来压制面波，因而需要开展多方面的研究：①结合面波、折射初至波和微测井信息的联合反演；②地震记录中适合面波分析的炮检距范围、道间距与表层分辨率的关系；③排列横向地形起伏变化对面波传播规律的影响；④高保真提纯面波信号的方法；⑤运用时频分析提取频散曲线的方法；⑥针对三层结构的面波正反演方法。

In the open ocean, due to very long wavelengths, the wave height is small (only 1-2m), this wave is not rough, but the spread of to near coastal areas, due to the gradual shallowing water depth, seabed resistance is increased, wave deformation, wave height increases rapidly (up to 10 meters), will be the formation of waves rushed into the land.

在开阔的大洋中，由于波长很长，波高不大（仅1—2m），这种波浪并不汹涌，但传播到接近海岸地带，由于水深逐渐变浅，海底阻力加大，波浪变形，波高急剧增大（可达10余米），便形成巨浪冲向陆地。

Based on the fact that the different modes of Rayleigh wave have different propagation velocities, the signals of Rayleigh wave which superposes in time domain can be separated in frequency-wave-number domain, different modes of Rayleigh wave are separated and extracted by Fourier transform.

摘 要：应用Fourier变换法分离提取地震记录中不同模态的瑞雷面波，其原理是：利用瑞雷面波各模式传播速度的差异，将时间域中叠加在一起的瑞雷面波信号在频率波数域中分开，以此实现分离提取各阶模态瑞雷面波。

Second, based on the spherical vector wave function in uniaxial anisotropic medium, and the first, second, third and fourth spherical Bessel functions satisfy the same differential equation and recursive formula. The scattering fields in terms of spherical vector wave function from a uniaxial anisotropic spherical shell and an anisotropic uniaxial-coated conducting sphere by a plane wave are derived. The electromagnetic fields in uniaxial anisotropic medium and free space can be expressed in terms of spherical vector wave functions in uniaxial anisotropic media and isotropic medium.

二、在建立均匀各向异性单轴介质球矢量波函数理论的基础上，利用二阶线性偏微分方程的性质和第一、第二、第三和第四类球Bessel函数满足相同的微分方程和递推关系，我们分别研究了单轴介质球壳和单轴介质涂覆导体球对平面波的电磁散射特性，首先给出了各个区域的电磁场用球矢量波函数来表示的解析表达式，进而利用电磁场在边界上满足电磁场切向连续的边界条件和球谐函数的正交性，得出了各向异性单轴介质球结构中电磁场用球矢量波函数表示的系数所满足的矩阵方程。

Secondly, the paper has carried on the analysis to the millimeter wave blasting fuse near field target characteristic, and has produced a RCS measuring technique. The analysis is that non- atmosphere window triangle wave modulation millimeter wave blasting fuse slip frequency spectrum, which has completed under the triangle wave modulation slip frequency signal time domain and the frequency range analysis.

随后对毫米波引信近场目标特性进行了分析，并给出了一种RCS的测量方法，并系统分析了非大气窗口三角波调制毫米波引信的差频频谱，完成了三角波调制下的差频信号时域和频域分析。

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The paper studies the calculaton of wave force on large scale cylinder. Using the linear wave diffraction theory to compute wave force on the large scale cylinder, the paper presents a Nystrm method to solve the problem of the linear wave diffraction.

主要考虑大尺度墩柱上的波浪力的计算，应用线性水波绕射理论来计算作用在大尺度墩柱上的波浪力。

This product installment in feed water pipe's forehead and the civil air defense exit toward the outside, keeps off the wave and disappears the wave way to unify, prevents the shock-wave to enter the system facilities engineering, thus achieves eliminates has the destructive shock-wave, has the protective system facility normal work and the safety protection goal.

该产品安装于给水管道的头部和人防往外的出口处，以挡波和消波的方式相结合，防止冲击波进入系统设施工程的内部，从而达到消除具有破坏性的冲击波，起到保护系统设施正常运转和安全防护的目的。

Simulation results show that both the longitudinal and transverse wave are included in the reflected waves,the reflection coefficient of longitudinal wave augments with the increase of the incident angle,and the reflection coefficient of transverse wave augments first and then minishes,the transverse wave disappears when the incident angl.

主要研究了声波从粘弹性介质向流体介质斜入射情况下的声反射特性，分析表明：反射声波中有横波和纵波同时存在，纵波声压反射系数随入射角度的增大逐渐增大，横波的声压反射系数随入射角度的增加先增大后减小，在垂直入射时只有纵波，而没有横波存在。

An algorithm for decomposition of multi wave and multi component data into upgoing and downgoing P wave and S wave was derived in frequency wave number domain in this paper. The reflection coefficient versus incident angle was calculated, which can provide foundational data for the AVO inversion of elastic parameters and prediction of fluid factor.

在频率波数域中采用解析法，解出多层条件下海底实测的多分量地震数据分解成上行和下行P波和S波的算法，导出海底各层地震反射系数随入射角变化的递推计算公式，为海底多波多分量AVO弹性参数的反演及流体因子预测提供基础数据。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。