查询词典 diffraction

Geometrical Theory of Diffraction is a fundamental algorithm in electromagnetic radiating and scattering, and programming is a key step for its application.

几何绕射理论是电磁辐射与散射计算领域中广泛应用的一种算法，而编程是其实施的一个关键。

By using Zernike polynomials to describe the wavefront distortion of beams, the propagation properties of the flattened Gaussian beams, super Gaussian beams, Gaussian beams and plane waves passing through an aberrated lens or an aberrated annular lens are studied based on the generalized Huygens-Fresnel diffraction integral.

以广义惠更斯—菲涅尔衍射理论为基础，采用Zernike多项式描述像差光束畸变波前相位，研究了平顶高斯光束、超高斯光束、高斯光束以及平面波通过像差透镜和环状像差透镜的传输。

Using the relations between Hermite and Laguerre-Gaussian modes and expanding the window function of two-dimensional rectangular hard-edged apertures into a finite sum of complex Gaussian functions, the propagation of complex- argument Laguerre-Gaussian beams through a paraxial optical ABCD system with a rectangular hard-edged aperture is studied. An analytical propagation equation is derived and used to study the diffraction at the rectangular hard-edged aperture and the focusing properties of complex-argument LG beams.

利用拉盖尔－高斯模和厄米－高斯模的变换公式，并使用将二维矩孔光阑窗口函数展开为有限个复高斯函数之和的方法，得到了复宗量拉盖尔－高斯光束通过含矩形硬边光阑近轴ABCD光学系统的变换的解析传输公式，并对复宗量LG光束通过矩形硬边光阑的衍射和聚焦特性进行了研究。

The general equation is introduced when diffraction, dispersion and nonlinear effects are considered together.

得到了在非线性旋磁材料中传播的TM电磁波在衍射效应、色散效应和非线性效应并存的条件下满足的传播方程。

Poisson line technique is a method of generating a straight line by diffraction for high precision alignment,which can keep the center of Poisson spot in this line at long distances (several tens or hundreds of meters).

Poisson斑的中心可以在很长的距离内保持与轴心共线因而能实现高精度的对心瞄准，这一技术被称为Poisson线技术。

For the first time the surface reflectors are designed using a combination of vector diffraction theory and geometric optics.

首次采用几何光学与矢量绕射理论相结合的方法设计出的反射曲面，较大地提高了准光模式转换效率，并使输出波束质量大为改进。

Nature of Light, Geometrical Optics, and Gaussian Approximation, Wave Optics, Interference of Light, Coherence, Polarization of Light, Diffraction of Light.

光的性质、波动光学、几何光学及高斯近似、光的干涉、相干性、光的偏振、光的绕射、一些重要的应用实例。

The cross-section morphology and microstructure of the coatings were studied by field emission scanning electron microscopy and glancing angle X-ray diffraction respectively,and the nano-hardness and friction behavior of the coatings were also characterized.

分别采用场发射扫描电子显微镜和小掠射角X射线衍射方法研究了涂层横截面的形貌和晶体结构，并对涂层的纳米硬度和摩擦性能进行了表征。

The formation of chromium nitrides was analyzed with glancing angle X-ray diffraction spectrometry using a Philips(PW3710) XRD at Korea Basic Science Institute.

在韩国基础科学研究所运用飞利浦X射线衍射仪（PW3710）对铬氮化物的形成进行了掠射角X射线衍射光谱分析。

Pure iron specimens were implanted by nitrogen ions with a fluence of 7×1017 ions/cm2 using ion beam implantation at an extracted voltage of 40kV.Composition and valence studies were carried out by X-ray photoemission spectroscopy;Glancing angle X-ray diffraction was employed to examine the phase transformation.

采用40kV的氮等离子体离子注入工业纯铁，注入剂量为7×1017ions/cm2，X射线光电子能谱研究表面注入层元素的成分和价态，X射线衍射分析注入层的物相转变，采用恒电位极化腐蚀试验研究了离子注入后材料在人工模拟体液中腐蚀行为。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。