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 experiments , comparison and analysis for the three thickness measurement methods :two-beam diffraction method , contamination spot method and contamination line method were carried out.
对于实际光学系统，由于光的衍射和像差，使所成的点像为一弥散斑。
However, for the actual optical system, its point image become a speckle because of diffraction of light and aberration.
散斑衍射晕能量分布合理，条纹清晰度好。
The intensity of speckle diffraction halo distributes more proper and the speckle fringes are clearer than conventional method.
这一研究揭示了爱里斑的结构，有助于加深和提高对经典衍射现象的认识。
Therefore, this research reveals the composition of Airy disc, which is beneficial to deepen and enhance the recognition of the classical diffraction problem.
相干激光雷达接收机中，信号光为平面光经衍射形成的艾里斑，本振光为基模高斯光束，在文章中对两者在探测器光敏面上混频的混频效率进行了讨论。
The mixing efficiency in coherent lidar of an Airy signal field with a Gaussian local-oscillator(LO) is discussed with the consideration of the effect of wavefront matching of both fields.
由于对该全息图直接计算得到的重构像，受零级衍射光斑和散斑噪声的影响较大，使得重构像质量难以令人满意。
The quality of the reconstructed image directly calculated from the recorded hologram is unsatisfactory because of the presence of the zero-order diffraction and the speckle noise.
由于对该全息图直接计算得到的重构像，受零级衍射光斑和散斑噪声的影响较大，使得重构像质量难以令人满意。
The quality of the reconstructed image directly calculated from the recorded hologram is unsatisfactory because of the presence of the zero-order diffraction and the speckle noise.
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