The experiments , comparison and analysis for the three thickness measurement methods :two-beam diffraction method , contamination spot method and contamination line method were carried out.
前言：对用电子显微镜测量薄膜厚度的三种方法：双束衍射法、污斑法、污线法进行了实验及比较分析。
The displacement vector for surface relief was determined to be near the invariant line direction using electron back scattering diffraction method.
本工作应用背散射电子衍射技术测得产生浮突的位移在不变线方向附近。
The straight-edge diffraction of this parallel beam superposing on the light spot constitutes the so-called M-line.
这束平行光的直边衍射花纹与光斑本底叠加的结果在观察屏上形成为通常所称的M线。
When the system close -loop controlling is realized for lower frequency perturbation, the approximate diffraction limited line spread function can again be achieved on the image plane.
对于低频扰动，当系统实现闭环控制后，像面上线扩散函数已接近衍射极限。
On the basis of Fraunhofer diffraction theory, the diffraction patterns of a Varied Line-space (VLS) grating were obtained for incidence beam in parallel and uniform.
基于夫琅禾费衍射理论，推导了平行光入射变栅距光栅后衍射光强的角度分布。
This paper puts forward a conception of a non-diffraction structured light (NDSL), which has characteristics such as linear structure, long focal-depth and narrow line-width, etc.
提出了一种无衍射结构光概念，这种光具有线性结构、焦深长、线宽小等特点。
The general formula of the light strength distribution for a varied-line space grating is introduced. The concept of complex factor of diffraction-interference is conducted.
本文给出了不等距光栅衍射光强度分布的一般公式，并引出了衍射—干涉复合因子的概念。
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。
More particularly, the present invention concerns sub-microscopic, holographic, electron beam, mechanically ruled or other diffraction or straight line gratings.
更具体地说，本发明涉及亚显微、全息、电子束、机械控制的或其它衍射和直线光栅。
The method and system of on-line precision measurement of thin thread using laser diffraction are presented and its measuring principle is elaborated.
介绍了一种采用激光单缝衍射法对细丝在线精密测量的方法和系统，阐述了其测量原理。
The method and system of on-line precision measurement of thin thread using laser diffraction are presented and its measuring principle is elaborated.
介绍了一种采用激光单缝衍射法对细丝在线精密测量的方法和系统，阐述了其测量原理。
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