表面电磁振荡激元波(SPW)谐振是金属膜参数及其表面状态的十分灵敏的函数。
The surface plasma waves (SPW) resonance is a sensitive function of the optical constants of metallic films and their surface conditions.
本文提出一种以长程表面电磁激元波作为泵波,在非线性介质膜中实现简并四波混频的新方案。
We propose a new method to realize degenerate four-wave-mixing in nonlinear optical thin films using long-range surface-plasmons-wave as pumps.
在物理学上最著名的二元性例子就是波粒二象性,这表明物同时具有波和粒两种属性。
The most famous duality in physics is the wave-particle duality. This one states that matter has both wave-like and particle-like properties.
中枢神经系统的细胞通过在神经元上传播的电信号波群来进行彼此的沟通。
Cells in the central nervous system tend to communicate with each other via a wave of electrical signals that travel along neurons.
提出了一种新的波元选取方法。
波达方向估计是利用天线阵元对空间信源的来波方向进行估计。
DOA (direction of arrival) estimation is realized by using antenna array to estimate the arrival direction of space signal source.
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。
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.
无穷元的应用消除了波在有限元边界上人为的反射效应,保证了数值解答的计算精度;
The use of infinite elements for modelling wave radiation eliminates the effects of artificial reflection of waves from finite element boundary, therefore the computational accuracy can be assured.
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 reflection phase property and surface wave dispersion are analyzed using finite element method.
平面波超元算法的结果表明:(1)平板光子晶体导模中存在带隙。
The results of the plane wave method with super cell shows: (1) photonic band gaps exist in the guided modes of the photonic crystal slabs.
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。
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.
小波理论为有限元方法提供了许多不同的基函数和多尺度分析方法,需要根据具体分析问题进行选择。
Wavelet theory provides various basis functions and multi-resolution methods for finite element method, which will be selected in solving different problems.
利用有限元法,提出了一种应力波及变形波的计算方法,并对一些典型结构进行了运算。
A method is put forward for computing the stress and strain waves in the structures under impact and heat loads.
本论文主要从理论上讨论与研究强非线性极性晶体中电磁波和长光学波格波耦合形成的极化激元的特性。
The main topic of this dissertation is the properties of polaritons that result from the coupling between the electromagnetic wave and the lattice wave in polar crystals with strong nonlinearity.
利用简并四波混频(DFWM)方法测量二元分子卟啉酞菁的三阶非线性极化系数X(3)值。
The values of third-order susceptibilities X(3) of porphyrin-phthalocyanine heterodimers have been measured by degenerate four-wave mixing (DFWM) method.
波由运动神经元逆向兴奋引起,故有可能间接评价运动神经元的功能状态。
F waves result from the back fire of the motoneuron activation, which may indirectly reflect the functional state of the motoneurons.
主要研究了热方程与波方程的非古典势对称群生成元及相应的群不变解。
Some nonclassical potential symmetry generators and group-invariant of heat equation and wave equation were determined.
应用显式有限元法对倾斜断层台阶在地震体波斜入射下的地震反应进行了数值模拟。
The explicit finite element is used to simulate the seismic response of an inclined fault step subjected to obliquely incident P and SV waves.
其次,在2.5维空间,用有限元数值模拟方法模拟了裂隙各向异性介质波场,结果用波场切片做了显示。
Then, the finite element method is used for synthetic in 2.5d space anisotropic media containing cracks. The results are showed by time snapshot.
采用基于开尔文源的面元法求解航行于均匀流场中的船舶兴波问题。
The wave problem is predicted by adopting panel method based on Kelvin source for a ship traveling in a uniform flow.
该算法是对传统MUSIC方法的推广与变形,克服了要求接收信号数小于阵元数的局限,能有效估计时延不同、波达方向相差很小的多径信号的参数。
The algorithm is a development of traditional MUSIC algorithm, so the number of multipath signals can be most of the array elements and can be used to estimate the parameters of multipath signals.
分析了有望用于毫米波成像焦面阵的介质加载波导阵元。
Waveguide loaded with dielectric, which is used as focal plane array element in millimeter wave imaging, was analyzed.
本文设计了一种实验方案,用高频表面波放电来激发等离子体,并分析了等离子体天线元的基本特性。
In this paper, we devise an experiment, using HF surface wave discharge to excite plasma, to analyze basic characteristics of plasma antenna elements.
把矿井隧道看作波导,利用有限元法分析了隧道中的罐笼对电磁波截止频率的影响,并得到数值结果。
The effects of cage in mine tunnel on the cutoff frequency is analyzed by the finite-element method when the tunnel is regarded as a waveguide, and the numerical results are obtained.
把矿井隧道看作波导,利用有限元法分析了隧道中的罐笼对电磁波截止频率的影响,并得到数值结果。
The effects of cage in mine tunnel on the cutoff frequency is analyzed by the finite-element method when the tunnel is regarded as a waveguide, and the numerical results are obtained.
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