非均勻波 的英文怎麼說

中文拼音 [fēijūnyún]
非均勻波 英文
non uniform wave
  • : Ⅰ名詞1 (錯誤) mistake; wrong; errors 2 (指非洲) short for africa 3 (姓氏) a surname Ⅱ動詞1 ...
  • : Ⅰ形容詞(均勻) equal; even Ⅱ副詞(都; 全) without exception; all
  • : Ⅰ形容詞(均勻) even Ⅱ動詞1. (使均勻) even up; divide evenly 2. (分出一部分) spare
  • : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
  1. The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time. in order to improve the communication quality of the shortwave that depends on the ionosphere, we should have aknowledge of the current condition of the ionosphere in real time. the backscatter sounding of high frequency can diagnose the real - time channel characters for shortwave communication or hf radar, which is great assistant to shortwave communication and hf radar

    電離層是隨機時變,各向異性,、色散的復雜介質。為了保證依賴于電離層進行的短通信質量,必須了解電離層的實時狀態信息。高頻返回散射探測可以實時監測與短通信或高頻天雷達相關的天傳播通道的狀態,對短通信和天雷達工作起了重要的輔助作用。
  2. In the next chapter, the two dimensional fipwa especially the modified steepest decent path ( msdp ) in angular complex plane and the interpolate / extrapolate technique have been carefully studied

    接著,重點研究了二維快速平面演算法,對其復平面上的修正最陡下降路徑及內插外推技術進行了深入研究。
  3. When an inhomogeneous plane wave is introduced into a dense dielectric layer, it can bounce between the two boundaries.

    把一平面引進折射率較高的介質層時,它會在上下界面間來回地「彈」射。
  4. Investigation of the sound absorption performance of multilayer non - homogenous wave - guide

    多層非均勻波導吸聲特性研究
  5. Propagation of electromagnetic wave along waveguide filled with inhomogeneous plasma

    電磁等離子體導中的傳播
  6. It is important to recall that a sound wave in a nonhomogeneously deformed material cannot be a plane wave.

    重要的是要記得,變形材料中的聲不可能是平面
  7. The first part is a statistical study about the probability of wave breaking and the fraction of sea surface covered by breaking water ( ie. whitecap coverage ), while the second part is a dynamical study about the influence of nonuniform current fields on the breaking of short wind waves

    本文內容包括兩個部分,第一部分是風浪破碎率和白浪覆蓋率等破碎統計特徵量的統計學研究,第二部分是流場對短破碎影響的動力學研究。
  8. 4. an roi coding method realized by foveation technology and two of its extended applications are presented. by unevenly upscaling the wavelet coefficients, the method can not only reconstruct the roi data priorly in a low bit - rate codestream, but make the progressive reconstruction of the image data more convenient for the human vision system

    該方法根據人類視覺生理特點,將小變換系數進行的上移位處理,不僅能夠保證感興趣區域圖像數據在低比特數據流中的優先恢復,還實現了使圖像的漸進恢復過程更加適合人類生理視覺感觀特點的效果。
  9. At first we improve the methods of iris image preprocessing, including an efficient arithmetic of evaluation iris images, an improving method of locating iris, calibrating iris image by the translation of coordinate and the circular shift of code, a eatimate of the background illumination by bicubic spline, and the image enhancement by the dual tree complex wavelet transform. next we designed the recognition arithmetic based on the location of the local maxima of the wavelet transform modulus. in the thesis lots of simulation are performed by means of matlab and visual c + +

    首先改進了虹膜預處理方法,實現了一種快速高效的虹膜質量評價演算法;設計了一種改進的兩步虹膜定位演算法,準確的定位了虹膜的內外邊界;利用坐標轉換和編碼的循環移位實現了對虹膜圖像的配準;利用雙三次樣條函數擬合虹膜圖像背景,去除了光照對虹膜識別的影響;使用二分樹復數小方法增強了虹膜圖像的對比度;在識別演算法方面,本文設計了一種「基於小模極值點位置的虹膜識別演算法」 。
  10. The wavelet multi - analysis is adopted to further understand the microstructure of solids holdup fluctuation, the vivid fingermark images show that it is a fractal and dissipative structure. the low and frequency signals reflect the dilute phase fluctuation behavior and dense phase ( cluster ) fluctuation behavior, respectively. to deep understand the multi - scales characteristic of gas - solids circulating fluidization, the wp decompose methods for obtaining the eigenvalue of gas - solid fluidized bed has been developed. the results show that eigenvalues of different scales are effective for identification of non - uniform and dynamic structure of gas - solid fluidized bed

    多分辨分析法得到指紋圖形象地揭示了顆粒濃度脈動的自相似、分叉等具有混沌特徵的微觀結構;小分解后信號中的低頻和高頻成分分別代表了稀相和密相的脈動行為,小包分解提取能量特徵值的方法能夠揭示氣固的多尺度特性,不同尺度上的能量特徵值四川大學碩十論文反映了氣固循環流化系統中存在的動態時空結構。
  11. In the former researches, scholars mainly studied following static aspects : topography and geomorphy, ocean hydrodynamic condition and soil engineering features. there is a lack of researches on the heterogeneity of sediment strength and the regular distributing characteristics

    在過去的研究中,人們主要對黃河三角洲的形貌特徵、海洋動力條件、土體工程特性進行了靜態的研究工作,而對于浪導致的土體強度的化及空間分佈上的規律缺少研究。
  12. In the lowest order, for the propagation of solitons in an inhomogeneous dusty plasma composed by two kinds of dust grains with different masses, if the interface of two kinds of dust grains in an inhomogenous dusty plasma is discontinuous, the tra nsmision and reflection waves both can be described by the kdv equation

    2在塵埃等離子體中,對于小的、但有限振幅的長振動,孤子可用kdv方程(或kdv型方程)來描述,而且電勢孤子的傳播情況在定性上與離子等離子體中電勢孤子的傳播情況一致。
  13. Following a discussion on the application of seismic techniques to the budunhua copper deposit in inner mongolia as well as the achievements gained, the paper points out that the ore - controlling structure can be detected by using reflection events, and the heterogeneuos bodies related to orebodies might be studied by utilizing high - frequency irregular scattering waves

    在對內蒙古布敦花銅礦勘查中的地震方法技術及取得的成果討論后指出,利用反射同相軸可研究測區的控礦構造,利用高頻不規則散射可研究與礦體有關的體。
  14. The numerical simulations show that the phase plane and amplitude plane in orthotropic fluid - saturated porous media is not paralleled to each other any more though the dispersion caused by the fluid is omitted. it is one kind of non - homogeneous wave. the maximum attenuation is no longer

    指出由於介質的各向異性,盡管忽略了流體粘度引起的粘度耗散,正交各向異性液飽和多孔介質中瑞利的相平面和幅平面亦不再重合,為非均勻波,最大的衰減不再沿傳播方向。
  15. ( 3 ) the basic theories and techniques on distributed radar cfar detection are reviewed. in particular, using the numerical performance simulation results, the performance of distributed cfar detect system under nonhomogeneous backgrounds and simple detect conditions are analyzed in some details. we have summarized the performance characteristics of distributed cfar detect systems against interference and edge clutter when different fusion rule is used

    西北工業大學博士學位論文( 3 )對分散式cfar檢測技術的相關理論、方法進行簡要總結與分析,特別是利用數值分析與性能模擬方法,對環境下簡單條件檢測系統的性能進行了較為深入和系統的研究,總結了不同融合方式時分散式cfar檢測在抗干擾與雜方面的性能特點。
  16. By employing the theory of operator representation, the reflection / transmission operator is decomposed into the form of double domains in the scheme, so it is adaptable to laterally heterogeneous media and fluctuating reflectors, can mimic ava of reflections when the incident angle is less than 45

    文中利用運算元可分表示理論將反射透射運算元分解成適合於雙域(空間域和數域)運算的表達形式,使得本文得到的地震數值模擬演算法可適應於一定程度橫向介質和界面起伏情況,在入射角小於45時能夠準確模擬振幅隨入射角( ava )的關系。
  17. The adaptation processing includes linear prediction coefficient adaptation and adaptation of quantization step size for residual signals. based on g. 726, we adopt a huffman coder to make use of probability statistic of bit cascade covering n ( n 1 ) samples generated from adpcm, in order to further reduce the bit rate. ng is lossless entropy coding, the speech quality of our improved algorithm should be same as that of g. 726 standard

    我們的研究和改進工作包括:研究最優自適應量化器,及其自適應演算法;研究形預測函數,以及函數零點、極點的自適應演算法;基於每n ( n 1 )個樣本所對應符號的概率統計,對預測殘差量化值再進行huffman編碼,進一步降低比特率。
  18. Three finite - difference methods, i. e., stagger grid, implicit and explicit algorithms, are analyzed in detail. multi - grid algorithm is firstly introduced in elastic wave simulation, to solve for the stability problem inherent in stagger grid and implicit algorithm, also for the efficiency problem inherent in explicit algorithm, and the precision, stability and efficiency for simulation of elastic wave arc increased by multi - grid method. phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation, based on phase delay and amplitude decaying features along wave propagation

    在水平分層介質接收函數的形反演研究的基礎上,本文系統闡述了介質中彈性傳播數值模擬常用的三種有限差分方法:顯式差分、隱式差分和交錯網格法,首次將多重網格演算法應用於彈性方程的數值模擬問題,克服了交錯網格法和顯式差分法穩定性差,以及隱式差分法計算效率低的缺點,大大提高了彈性數值模擬的精度、穩定性和計算效率。
  19. Being local in space and frequency, and some even compactly supported, wavelets are used to simplify the wave equations in slowly varying nonhomogeneous medium, and transfer the problem of solving two - dimension wave equations into a series of one - dimension problems, after words, the method in 1 can be applied to solve it. as a result, the complexity of the problem and the difficulty in solving it are largely reduced

    利用小變換在空間域和頻率域上具有局部性的特點,通過小展開,把二維問題轉化為一系列一維問題,然後利用在(一)中得到的通用計算公式求解,大大降低了問題的復雜性和難度。
  20. From the mathematical point of view, the difficulty stems from the inability to get, with the traditional global transform like the fourier transform, a simplified differential equation that governs the evolution of the basic function through the non - homogeneous medium

    這些基本函數的全局特性使其在空間的演化變得十分復雜,從而影響了傳統方法的場外推精度及效率。
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