表面幾何 的英文怎麼說

中文拼音 [biǎomiànjīhé]
表面幾何 英文
morphology
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 幾 : 幾代詞1. （多少, 用於詢問數量和時間） how many 2. （表示不定的少數目） a few; several; some
  • 表面 : surface; superficies; boundary; face; rind; sheet; skin; outside; appearance
  1. As we know, inverse techniques make blade ' s profile well compatible with its surface velocity distribution, however, they give designers big challenges that the ideal velocity distribution is hard to obtained and sometimes the non - physical solution, such as double covering of flow field or unclosed profiles, would come out. the proposed design procedure in the paper has avoided the disadvantage mentioned above. in this paper, a quasi - irrotational equation is used to describe the flow in cascade instead of the generally used irrotational equation

    眾所周知，一般的反問題和混合問題的最大特點，是在給定的壓力面和吸力面上的壓力分佈或速度分佈條件下，直接得到葉片的幾何形狀，它可以使葉型型面與表面氣流參數有機結起來；其不足之處在於，對設計者而言，很難給定理想的葉片表面壓力分佈或速度分佈，並且有時會得到一個非物理解，如：得出的初始葉型可能會出現前緣、尾緣不封閉的現象。
  2. Abstract : in this paper ， a ray - optics analysis is performed to investigate the asymmetry of dual beam scanning field produced by a rotating polygon. some basic equations of dual beam scan are derived ， such as ， the position vector for the incident point ， the scalar expression for reflected ray ， scan pattern on observation plane ect. the far - field asymmetry of the scanning field has been discussed

    文摘:應用幾何光學理論研究了多光束轉鏡掃描場的非對稱性，導出多光束掃描入射點位置矢量、反射線標量表達式、觀察面上的掃描軌跡方程，並研究了掃描遠場的非對稱性。
  3. Finally, convergent geometry had an important effect on the perturbance coupling between the interfaces of the finite fluid. the attenuation factor of perturbance coupling from the outer interface in was greater than the one from the inner out

    本文研究表明：收縮幾何效應對有限厚度流體的界面之間的擾動耦合有重要影響，柱和球幾何中擾動耦合從外界面到內界面的衰減因子大於從內界面到外界面的情況。
  4. The metal cellular sandwich board, being the most advanced, novel - style and top - grade fire - proofing architectural material both internationally and domestically at present, can be used for standard high - quality architecturally integrated ceiling and partition decoration, etc

    金屬蜂窩夾芯板是目前國際、國內最先進行的新穎高級建築防火材料，用於標準的高質量建築一體化吊頂及隔斷裝飾等，它具有美觀、輕質、高強、隔聲、隔熱、防潮、不燃、表面不起塵、幾何尺寸準確，組合性強、施工快捷、方便等優點。
  5. The strength of convergent shock was enhanced in cylindrical and spherical geometries than in planar geometry. the bubble became more wide and big and the spike became more narrow and long. it showed in spherical implosion that the spike close to the symmetrical axis grew faster than the ring one away from the symmetrical axis

    第四，利用lared一s程序模擬柱和球幾何內爆過程中rt不穩定性增長，表明收縮幾何效應對內爆過程中不穩定性的增長有重要影響，柱和球幾何中聚心沖擊波的強度大於平面情況，氣泡變得更加寬而大，而尖頂變得更加細而長。
  6. Secondly, nonlinear threshold of two - dimensional rt instability was analyzed in planar and cylindrical and spherical geometries. density amplitude was defined relating to instable interface and formulae of nonlinear threshold values for rt instability in three geometries were given, then the lared - s code was used to simulate two - dimensional rt instability in three geometries and simulation results agreed well with the formulae

    其次，討論了二維平面、柱和球幾何中rt不穩定性發生非線性偏離的閾值問題，給出了三種幾何中密度擾動振幅的非線性閉值公式，並且用lared一s程序進行了檢驗，計算結果表明柱和球幾何中的模藕合機制與平面幾何不同，存在幾何效應的影響。
  7. Because 3d surface model contains huge number of triangles, a mesh simplification algorithm based on triangle edges shrinkages is presented in this paper to speed up the rendering in real time. in chapter four, the cutting of reconstructed 3d models is explored. in order to observe expediently the size and interspaces structure of inner tissues and avoid the discommodiousness of surface reconstruction, a simple cutting methods based on ray - casting algorithm is presented to get the inner images information

    第三章主要對marchingcubes （ mc ）表面重建演算法進行描述， mc演算法是基於規則體數據抽取等值面的經典演算法，本文實現了這種等值面構建表面模型的演算法，並對其演算法的二義性進行了相應的處理；針對其重建速度較慢的問題，提出了體素間相關性處理的方法來加快重建速度；並對其生成的表面幾何模型所包含三角面片數量巨大的問題，提出一種快速有效的三角形邊收縮演算法進行網格簡化，提高了表面模型的繪制速度。
  8. The following remarks refer to the effects of mechanical processing on fiber surface geometry.

    下面介紹機械加工對纖維表面幾何形狀的影響。
  9. By an investigation to various examples, it is found that the texture distortion is mainly produced from the discord of direction variation between texture and surface geometric, incurred by the simplification to the surface

    從另一個角度對紋理扭曲的產生原因進行了分析，認為紋理扭曲主要是由於簡化導致模型表面幾何方向變化和紋理方向變化不一致造成的。演算法因此根據幾何和紋理方向變化來度量紋理扭曲的程度。
  10. According to the geometrical characteristics of the surface on the deformed bars, considering the interfacial properties of the corrosion reinforcement and concrete, such as the microscopic mechanics model of corroded reinforcement ribs, the deterioration of ribs on the bearing surface of the deformed bars after corrosion and the effect of corrosion products of corrosion reinforced bar on the bond strength, and analyzing the distribution and interaction of the forces on the surface of the corrosion reinforcement and concrete, the calculation expressions of the bond strength between corroded deformed bars and concrete with and without transverse steel are established

    從變形鋼筋的表面幾何特徵出發，考慮了鋼筋銹蝕后鋼筋與混凝土接觸面的特徵，例如鋼筋橫肋在銹蝕狀態下的細觀力學模型，鋼筋銹蝕后鋼筋橫肋高度的變化和銹蝕產物的生成對粘結力的影響。通過分析接觸面上各種力的分佈形式及相互關系，建立了有橫向鋼筋和無橫向鋼筋約束作用下，鋼筋與混凝土之間粘結力的計算表達式，且與相關文獻的結果進行了比較。
  11. With checking and optimization, some rational suggestions on bridge location, shape and overall arrangement is put forward. after construction checking, the author also puts forward some requests for construction pre - cove and safety pier setting, at the same time gives optimum design on joint balance pier. construction structure checking indicated that not only the strength and stability coefficient of rotation stiffness framework is affluent, but also the section size

    通過驗算及優化，對該橋推薦方案的橋址、武漢理工大學碩士學位論文橋型及橋梁總體布置提出了合理化的建議;通過施工驗算，對施工預拱度及保險墩的設置提出了要求，對交界平衡墩進行了優化設計;施工結構驗算表明，轉體勁性骨架強度、穩定性富餘系數較大，截面幾何尺寸過大，結構設計過于安全保守，並提出了結構優化的方法，從而大大節省了工程投資，加快了工程進度，增強了橋梁的美觀。
  12. Because there is the difference between expert - novice and excellent - disability students, we carried out the research on senior students. based on the investigation, we compared the time they used in each layer and analyzed the sequence. in order to improve students capability of solving problem, we adapted some teaching measure and concrete experiment steps in geometry

    由於專家?新手之間在知識的量與質的方面存在較大的差異，這與優生?差生之間的差異存在著不同，因此，本研究對初中優差生解決平面幾何問題表徵差異進行了調查，對他們在各表徵層次所用的時間進行了統計比較，並從認知方面對產生差異的原因進行了分析。
  13. The moment method is used to calculate the rcs of three - dimensional targets in this paper. these targets include conducting targets, dielectric targets and coat targets. triangular patches are used to model the surface of the target, then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions. the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target. finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation. when obtain the equivalent electric current and magnetic current, we can calculate the scattering field and the rcs of the target

    本文利用矩量法計算了三維導體目標、介質目標、塗層目標的雷達散射截面。首先採用三角形面元對物體表面幾何形狀進行模擬，然後建立滿足邊界條件的電場積分方程（ efie ）和磁場積分方程（ mfie ） ，將物體表面的等效電磁流用rwg矢量基函數表示，最後利用伽略金法（ rwg矢量基函數既作為基函數又作為檢驗函數）將電磁場積分方程轉化為矩陣方程求解未知電磁流系數，得到了表面的等效電磁流后，可以計算散射場和目標的雷達散射截面。
  14. Owing to its many advantages, it has become a powerful technique in polymer field such as the characterization of the surface morphology and properties, the visualization of phase separation, and the investigation of polymer on nanometer scale

    近年來，其應用已由對聚合物表面幾何形貌的觀測發展到納米級結構和表面性能的研究領域。
  15. In this paper, various previous brdf models, which include empirical models, geometrical optics models and theory models, are summarized and their merits and demerits are analysed. both shadowing function and facet distribution function as statistical characters of rough surface are discussed besides simpled fresnel reflectance function

    本文首先總結了前人提出的各種目標表面brdf模型? ?經驗模型、幾何光學模型、理論模型等，分析了這些模型的優缺點，論述了隨機粗糙表面幾何光學統計特性? ?遮蔽函數、小面元分佈函數，簡化了菲涅爾反射函數。
  16. At present, the studies on this are mainly focus on the surface geometry structure. little is payed for the electronic structure. in this dissertation, the surface properties of high miller index surface of metals and semiconductors were studies by using the molecular dynamics method, the scattering theoretical method and the ab initio quantum mechanical molecular dynamics simulations

    金屬和半導體材料的高密勒指數表面是目前表面科學研究的一個熱點問題，也是值得更進一步研究的問題，目前的研究主要集中在對表面幾何結構的確定，而對表面電子特性的認識幾乎很少涉及，本文根據目前實驗上對一些表面已有的研究結果，在理論上對一些金屬、半導體的高密勒指數表面的表面能和表面電子結構進行了研究。
  17. For people doing the day - to - day work involving 3d scanning, data clean up and sculpting, surfacing and re - structuring for polygons, nurbs and sub - division surfaces, geometry systems inc. offers a range of solutions to help you to get your works done

    為人民做好日常工作，涉及三維掃描，數據清理和造型，鋪裝，重新構造為多邊形，的nurbs和細分表面，幾何學系統公司提供一系列的解決方案，以幫助你取得你的作品做了
  18. Using 304l wire as the cladding material, the experimental results proved that the relationship among welding bead width, welding current and speed could be expressed with a plane in an x - y - z coordinate

    對採用304l不銹鋼作為單一熔覆材料的成形試驗研究表明：電流、成形速度與成形軌跡寬度的關系可以採用平面幾何關系表示。
  19. A new kind of numerical method, the statistical distributed source boundary point method ( sdsbpm ), used to calculate the acoustic radiation problem caused by the random vibrating body is presented ; a test for the effectiveness of the sdsbpm is carried out on the aspects of its calculation precision, adaptation to the geometric shape of vibrating body as well as its ability to overcome the non - uniqueness problem through various examples with different boundary shapes and different boundary value distributions

    第四章提出了一種新型的隨機振動聲輻射計算方法?統計分佈源邊界點方法；通過諸多不同邊界曲面和不同邊界量分佈的隨機振動聲輻射算例，從計算精度、對振動體表面幾何形狀的適應性以及克服解的非唯一性等方面，對統計分佈源邊界點方法的有效性進行了考證。
  20. The formulation for the error analysis of acoustic radiation problem calculated by the boundary point method ( bpm ) is put forward ; the physical explanation of the boundary point analysis of the acoustic radiation problem is given ; the influence of the particular solution on the calculation stability of the bpm is studied ; the etthanced volume source boundary point method ( evsbpm ) is presented ; a test for the effectiveness of the evsbpm is carried out on the aspects of its calculation precision, calculation speed, calculation stability, adaptation to the geometric shape of vibrating body as well as its ability to overcome the non - uniqueness problem through various examples with different boundary shapes and different boundary value distributions

    第三章導出了邊界點方法分析振動聲輻射問題的誤差估計理論公式，揭示了邊界點方法分析振動聲輻射問題的物理本質；研究了特解場的局部特性對邊界點方法的數值穩定性的影響；改進了現有的特解場構造方法，提出了改進體積源邊界點方法；通過諸多不同邊界曲面和不同邊界量分佈的聲輻射算例，從計算精度、計算速度、計算穩定性、對振動體表面幾何形狀的適應性以及克服解的非唯一性等方面，對改進體積源邊界點方法的有效性進行了考證。
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