diffraction field 中文意思是什麼

diffraction field 解釋
繞射場
  • diffraction : 分解
  • field : n 菲爾德〈姓氏〉。n 1 原野，曠野；（海、空、冰雪等的）茫茫一片。2 田地，牧場；割草場；〈pl 〉〈集...
  1. In chapter two, we fabricated r - ni - fe / al2o3 nanocomposites successfully by using ball - milling mixing method plus hot - pressing process. meanwhile, their microstructures are characterized by x - ray diffraction ( xrd ) analyser, transmission electron microscopy ( tem ), field emission scanning electron microscopy ( fe - sem ) and brunauer - emmett - teller ( bet ). the results indicate that ni - fe particles are homogenously dispersed in the matrix in the composites

    在第二章中，我們採用高能球磨混合方法加上熱壓燒結工藝，成功制備了ni - 20fe al _ 2o _ 3納米復合材料，並通過x射線衍射儀（ xrd ） 、透射電鏡（ tem ） 、場發射掃描電鏡（ fe - sem ） 、比表面孔隙儀（ bet ）對該復合材料的微結構進行了表徵。
  2. According to the theory of scalar diffraction, first, the equipollence of spatial distribution of the plane - wave interferential field and parallel projective sine grating is discussed

    摘要根據標量衍射理論，首先討論了兩平面波干涉場的空間分佈與平行投影正弦光柵的等價性。
  3. The major work is as follows : solution of two dimensional radiation or diffraction fluid field. this thesis extends multipole expansion method to adapt to disturbed fluid fields of 2d floating bodies with asymmetric forms, which is applied with symmetric forms originally. and given the solution of potential velocity and hydrodynamic pressure of radiation and diffraction fluid fields, which is incited by a 2d arbitrary form, actual application field of the multipole expansion method has been enlarged

    關於二維擾動流場的求解：將通常僅適宜求解具有對稱形狀二維物體擾動流場的多極展開法（保角變換方法）擴展至非對稱形狀二維物體，給出了任意形狀二維物體的輻射和繞射流場的速度勢及水動壓力的頻域解，進一步擴大了多極展開法的實際應用范圍。
  4. The chemical composition and microstructures of the insulating thin films prepared by different methods were analyzed by x - ray diffraction ( xrd ) and scanning electron micrograph ( sem ) ; other properties such as electric resistance, the breakdown field strength and dielectric properties were evaluated using high resistance meter, voltage resistance meter and precision impedance analyzer respectively

    採用x射線衍射儀（ xrd ）對表面絕緣薄膜的物相組成進行了分析，掃描電子顯微鏡（ sem ）對表面絕緣薄膜的微觀結構進行了研究，並用絕緣電阻測試儀、耐壓測試儀和精密阻抗分析儀分別對絕緣膜進行絕緣電阻率、擊穿場強和介電性能的測試。
  5. The bragg diffraction efficiency of gows in bismuth - doped yig film is caculated by considering the edge cut - off effect. the obtained theoretical curve is basically agreement with the experimental results. it is shown that the diffraction performance for mo bragg cells can be greatly increased by using an appropriately nonuniform bias field

    2 .考慮到邊緣截止效應，論文中計算了靜磁正向體波對導波光的衍射效率，理論結果與實驗符合;從而表明，與均勻場情形相比，適當不均勻場可以大大提高磁光bragg器件的衍射效率。
  6. The cenosphere particles were characterized with optical microscope, field emission scanning electron microscopy ( fesem ), energy - dispersive spectroscopy ( eds ) and x - ray diffraction ( xrd ) in and after the plating

    用光學顯微鏡、場發射掃描電子顯微鏡、能譜儀和x射線衍射儀對其進行了分析表徵。
  7. The hydrauli c model of gradual dike - break simulates numerically the 2 - d flow of gradual dike - break waves. it shows the variation of flow field on breach, and the complicated flow characteristic of the propagation, diffraction, reflection and deformation of the dike - break waves. the hydraulic model can realistically simulate the burst process of dike, and computational accuracy is satisfied with the engineering demands

    本文建立逐漸潰堤的水力模型首次對二維逐漸潰堤波的流動問題進行了數值研究，揭示了逐漸潰堤過程中潰口處流場的變化情況，以及潰堤波的傳播、繞射、反射及變形的復雜運動特徵，能較好地模擬實際工程中的潰堤失事，模擬比較逼近於真實潰決過程，計算精度可滿足工程要求。
  8. The corrosion behavior of nanocrystalline ( nc ) copper bulks with various grain sizes prepared from igc ( inert gas condemsation ) and vacuum annealing in comparison with conventional microcrystalline ( mc ) copper ( as - rolled and electrolytic ) in acid copper sulphate solution and neutral solution containing chlorides under free corrosion conditions and anodic polarizations has been studied using potentiodynamic polarization, potentiometric analysis, cyclic voltammetry and electrochemical impedance spectroscopy. x - ray diffraction was used to estimate the grain size of the annealed nc copper. field emission gun scanning electron microscopy and x - ray energy - dispersive spectroscopy was used to characterize the surface morphology and analyze the surface composition after the polarization and potentiometric test of both nc and mc copper

    本文研究了用igc （惰性氣體蒸發凝聚原位溫壓法）制備並真空退火到不同晶粒尺寸的納米晶銅和微米晶銅（冷軋紫銅、電解銅）在酸性硫酸銅溶液和中性含氯溶液中，在自腐蝕狀態和陽極極化狀態下的腐蝕性能。使用了動電勢極化、電位測定、循環伏安法（ cv ）和電化學阻抗譜（ eis ）等方法。 x -射線衍射（ xrd ）的方法用來估算納米晶銅晶粒尺寸。
  9. Such as, the amplifying effect on the field of divergent spherical wave, the condition of talbot effect to be observed, etc. based on the study of the law and method to generate structured illumination, which is derived from fresnel diffraction law, this thesis offers a structured illumination scheme that is applicable to 3d sensing system. also, computer simulation and 3d shape measurements of real objects are presented

    在研究了基於菲涅耳衍射的結構照明的原理和方法的基礎上，本文提出了適用於三維傳感系統的結構照明方案，並通過計算機模擬實驗和對實物模型的三維面形測量證實，本文提出的原理和方法是正確的和有效的。
  10. Here, the spatial distribution of fresnel diffraction field and different talbot effects of sinusoidal grating are presented, under three different illuminating conditions. especially, we discussed some interesting properties about fresnel diffraction field and talbot image, when sinusoidal grating is illuminated by divergent spherical wave

    特別地，我們討論了發散球面波照明的情況下，菲涅耳衍射光場和泰伯像所具有的一些有趣的性質，如球面波對光場的放大作用，泰伯效應存在的條件等等。
  11. Then, the kirchhoff scalar diffraction theory is used to derive the scatter field of the edo grating and the simulation model is presented

    並利用基爾霍夫標量衍射理論導出了edg光柵散射場的公式，建立了對蝕刻衍射光柵的模擬模型。
  12. The propagation characteristics of the diffraction field by a circular aperture of bessel - gauss beam

    高斯光束圓孔衍射場的傳播特性
  13. Four kinds of c / c composites with different preparation techniques were graphitized at 2400 - 2880. the relations between magneto - resistance and orientation ( the angle between surface of samples and magnetic field ), measure temperature, the intensity of magnetic field ( b ) were studied for each sample. the micro - structure and x - ray diffraction pattem were investigated too

    本論文在對制備工藝不同的四種碳/碳復合材料樣品進行2400 2880的石墨化處理后，應用ppms （ physicalpropertymeasurementsystem ）研究了測試位向（試樣某特定面和磁場方向夾角） 、測量溫度以及外加磁強對材料磁電阻特性的影響，同時研究了各試樣的微觀結構和x射線衍射譜圖。
  14. From maxwell equations the refractive index equation and hamilton - jacobi equation, which describe the evolution of the electric field, are derived including the effects of the diffraction, the third - order intensity - dependent nonlinearity, plasma defocusing, the focusing and defocusing of the plasma channel, and the relativistic self - focusing

    從maxwell方程出發我們得到了兩個包含衍射、三階強度非線性、等離子體散焦、等離子體隧道聚焦和散焦以及相對論自聚焦等效應在內的激光場演化方程，即折射率方程和哈密頓-雅可比方程。
  15. A simple and effective method is given to successfully simulate circular and different serrate type aperture ' s far - field diffraction and compared with the diffraction of hard - edged circular apertures

    摘要採用一種簡單有效的方法，模擬了光束經圓形孔徑和不同齒形光闌的遠場衍射分佈，並與經圓孔硬邊光闌的衍射作了比較。
  16. This paper systematically discussed the fundamental, characteristics, research status and equipment of microwave sintering, and introduced the preparation and development of sintered ndfeb magnets, on the basis of which the effects of the parameters on the heating rate and sintering temperature were investigated. and by means of optical metallurgical analysis, x - ray diffraction analysis and the measurement of density and magnetic properties, the paper compared the properties and technology of ndfeb magnets sintered in microwave magnetic field with that of magnets sintered in conventional heating process

    本文系統論述了微波燒結基本原理、特點、研究現狀和燒結設備，介紹了燒結ndfeb制備工藝和發展，在此基礎上研究了微波磁場燒結ndfeb永磁材料過程中各因素對升溫速率、燒結溫度的影響，並通過金相顯微分析、 x射線衍射分析、密度及磁性能測試等手段，將微波磁場燒結的ndfeb磁體與常規燒結的磁體進行了工藝與性能的對比分析。
  17. In order to analyze the effect of aberration of amplitude and phase of laser beam on centroid position of focal spot, based on the fraunhofer formula for light wave scaler diffraction theory, according to the definition of first order moment centroid position, the general expression of focal spot centroid position directly depending on the complex amplitude of near field is derived

    摘要為分析振幅和相位發生畸變情況下光束焦斑質心位置所受的影響，以光波標量衍射理論中的夫瑯和費衍射公式為基礎，根據光斑強度分佈一階矩質心位置的定義，推導了直接依賴于光束近場復振幅分佈的焦斑質心位置的一般表達式。
  18. The basis is that when incident polarized light gets through a liquid - crystal box, it ’ s first diffraction angle and optical intensity are controlled by periodic electric field

    其原理為:入射偏振光通過空間周期電場作用下的液晶盒，一級衍射角和衍射光強受到電壓的調制。
  19. Secondly, the precision of diffraction field of the edges of targets has been greatly advanced by improving the original method of detecting edges

    其次，改進了原先的棱邊檢測方法，使得棱邊繞射場的計算精度大大提高。
  20. In this thesis, we present the law and method to generate structured illumination based on fresnel diffraction. by applying rsd theory, we analyzed the spatial distribution of fresnel diffraction field of sinusoidal grating and its available application in 3d sensing

    本文詳細地研究了基於菲涅耳衍射的結構照明的原理和方法，利用角譜理論（平面波衍射理論）分析了正弦光柵的衍射光場的空間分佈及其在三維傳感中應用的可能性。
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