衍射则是电波绕射传播到遮蔽区的现象。
The diffraction effect is the phenomenon of wave propagation into shadow region.
结果表明在近海面环境下X波段电波的绕射传播不是最优的传播模式。
The result shows that the diffraction propagation on X-band is not the best model under the sea environment.
分析了电波的地波绕射传播、视距传播、散射传播和波导传播等四种传播模式，根据ITU - R和GZB建议的模型分别计算了各传播模式的基本传输损耗。
Four propagation models of diffraction, line-of-sight, scatting and duct are analyzed. The basic transmission loss for each of the models is calculated according to the ITU-R model and GZB model.
分别建立雷达电磁波在干涉区、中间区和绕射区传播的数学模型和它们适用的边界条件。
The mathematical models and their limitative condition of radar electromagnetic wave propagated in interference region, intermediate region and diffraction region are set up respectively.
针对实验结果给出一种简便的近似计算方法，它能准确地重现炸药球壳中长程绕射爆轰波的非理想传播行为。
A simple approximate calculation method is given, which can exactly reconstruct the long distance non ideal propagation of detonation waves in the spherical shell of the charge.
本研究是把折射和绕射的相关影响结合起来考虑的复合折射-绕射模型REF/DIF 模型应用于深水航道对波浪传播的影响规律的研究。
The influence pattern of deep water channels upon wave propagation is studied by REF/DIF model, which combined refraction and diffraction effects together.
该模型将爆炸波在岩土中的自由场传播与遇到结构后产生的波反射、绕射、透射等现象相结合考虑。
The finite element model includes wave reflections, diffraction, and transmission when the shock wave encounters the structure.
计算结果清楚地给出了激波传播、绕射、反射、及相互干扰的复杂流场结构。
The numerical result shows clearly the propagations, diffraction, reflection and interaction with each other of shock waves.
本文从分析声屏障的声学原理入手，探讨声屏障的透射、反射和绕射机理以及对这三种传播途径的影响因素。
This paper analysis the acoustic principles of noise barriers, discuss the transmission, reflection and diffraction of the noise barrier, and the influencing factors of the three transmission routes.
对于平面二维波浪传播的问题，则需要考虑波浪的折射、绕射。
For the two-dimensional horizontal wave propagation problem, refraction and diffraction of waves must be taken into account.
结果表明，开挖航道对波浪的传播变形影响较大，不能用纯绕射来代替波浪的折、绕射联合作用。
The compared results show that the wave transmutation is greatly effected by the navigation channels and the refraction-diffraction model can't be replaced by diffraction cond…
结果表明，开挖航道对波浪的传播变形影响较大，不能用纯绕射来代替波浪的折、绕射联合作用。
The compared results show that the wave transmutation is greatly effected by the navigation channels and the refraction-diffraction model can't be replaced by diffraction cond…
应用推荐