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In this paper, the step frequency response equation of optical-region radar target is firstly established by using theories of multiple scattering centers and local resonance.
本文首先根据多散射中心理论与局部谐振原理，建立了雷达目标在光学区阶梯频率波形激励下的响应方程。
Considering the effect of multiple scattering, the rain induced attenuation at millimeter wave frequencies was simulated numerically.
在考虑多重散射效应的情况下，数值模拟了毫米波段的降雨衰减。
Because emitted phonons carry only little energy, multiple scattering processes is needed for electrons and phonons to reach thermal equilibrium.
由于辐射声子携带能量很少，需要多次散射过程使得电、声子趋于热平衡。
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