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We rigorously analyze the dispersion function and the curvature of the dispersion surface of a photonic
crystal to explore the fundamental limit of its angular sensitivities. With insight gained from group theory, we
fi nd that symmetry indu
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请大家帮忙看看问题出在哪里,a0\a1\a2还可以，A3以后就不对了-Matlab computing applications lamb wave dispersion curves, group velocity and phase velocity calculation.
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只需改变结构的内外半径即可即可求解杆状结构和管状结构的相速度和群速度的频散曲线。-Just change the structure of the inner and outer radii can be solved phase velocity dispersion curves and the group velocity of the rod-shaped structures and tubular structures.
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计算频散曲线的工具，可以计算lamb波的群速度和相速度。-The group velocity and phase velocity of Lamb wave can be calculated by means of calculating the dispersion curve.
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lamb频散曲线，包括相速度和群速度随频厚积的变化(Lambish dispersion curves, including changes in phase velocities and group velocity with frequency-thickness product)
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MATLAB频散曲线绘制，相速度，群速度(MATLAB dispersion curve drawing, phase velocity, group velocity)
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Lamb波的频散曲线是进行超声Lamb波无损检测的重要依据。本程序对Rayleigh2Lamb方程进行了分析，给出了无限大板中Lamb波频散曲线的数值计算方法，通过Matlab软件对求解过程进行编程，绘制出Lamb波在铝板中传播的相速度和群速度曲线，并通过试验进行了验证对推广应用Lamb波进行无损检测具有实际意义。(The dispersion curve of Lamb wave is an important basis for non-destructive testing of ultr
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Lame波的频散曲线，包括相速度和群速度。(The dispersion curve of Lame wave includes phase velocity and group velocity.)
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绘制导波在平板的频散曲线，包括群速度，相速度和频率的关系图，以导波在钢板中传播为例(A graph of the frequency-dispersion curve of the guide wave on the plate, including group velocity, phase velocity and frequency, is drawn, taking the transmission of the guide wave in the steel plate as an e
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