Basing on the light diffracting theory of Kirchhoff, we obtain the expression for the intensity of speckles in deep Fresnel diffraction region.
本文利用基尔霍夫近似理论，对菲涅耳极深区相干散斑和部分相干散斑进行了理论研究和计算模拟。
The mathematical models and their limitative condition of radar electromagnetic wave propagated in interference region, intermediate region and diffraction region are set up respectively.
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 fields in transition and caustic region of dielectric coated objects are obtained by geometric theory of diffraction.
本文应用几何绕射理论对介质覆盖体上过渡区和焦散区的场进行了详细地分析。
Finally we extend the Fresnel number to the region of complex number, and use it to investigate the diffraction problem of a truncated Gaussian beam.
最后，把菲涅耳数推广到复数域，并用于研究截断高斯光束的衍射问题。
In this model, the noise field in sound shadow region is deduced by applying Huygens-Fresnel principle. It provides a new ideal for deducing the diffraction sound of complicated…
模型中对声影区的声场分布采用惠更斯-菲涅耳原理进行推导计算，给出的理论计算公式可为推导计算其它复杂声源的衍射声提供借鉴。
It is shown that many properties of diffraction in the Fresnel region can be obtained.
从中可得到菲涅耳衍射区的许多特性。
Abstract: Diffraction efficiency of Al-coated triangle and holographic sinusoidal grating used in UV region are calculated using the differential formalism of exact electromagnetic theory.
摘要：基于有限电导率光栅的微分理论，对工作在紫外光区的全息正弦光栅和三角槽形光栅的衍射效率做了数值计算。
The low temperature plasma nitrided case of 321 stainless steel was analyzed by XRD, and the analysis found that the diffraction peak had evidently moved in low-angle region.
对经低温离子渗氮的AISI 321纲渗层进行了XRD分析，发现试样的谱峰明显向低角度偏移。
The low temperature plasma nitrided case of 321 stainless steel was analyzed by XRD, and the analysis found that the diffraction peak had evidently moved in low-angle region.
对经低温离子渗氮的AISI 321纲渗层进行了XRD分析，发现试样的谱峰明显向低角度偏移。
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