輻散理論 的英文怎麼說

中文拼音 [fúsǎnlǐlún]
輻散理論 英文
divergence theory
  • 輻 : 名詞（車輪中車轂和輪圈的連接物） spoke
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 論 : 論名詞（記錄孔子及其門徒的言行的「論語」） the analects of confucius
  • 理論 : theory
  1. But it is not the same with surd or the alternation of sonant and surd. on the base of the acoustics, a whole linear time - varying discrete speech produce model is established through anatomising the factors including track, driving source and lip eradiation the mechanism of speech in this paper, and we draw a conclusion that the time between glottal closure is pitch period

    本文從聲學理論出發，剖析了語音產生的機理，綜合考慮聲道、激勵源和嘴唇輻射三方面的因素，建立了一個完整的、線性的和時變的語音產生的離散系統模型，得出兩次聲門閉合事件之間的時間間隔就是基音周期的結論。
  2. The key components in laser gyro is he - ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the lamb half classical theory, and on the base of density matrix theory, the optical brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter - propagating wave. on the basis of this equations, adopted the simulation software matlab and virtual instrument programming language labwindows / cvi, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro

    激光陀螺的核心部件為he - ne環形激光器，而掌握光與介質的相互作用理論是研究激光器的關鍵，採用拉姆半經典理論為主，在密度矩陣理論的基礎上，推導環形諧振腔中描述he - ne氣體增益介質原子運動的光學布洛赫方程，運用介質極化理論得出描述激光陀螺反向行波的光強、位相所滿足的自洽場方程組，在此基礎上，運用matlab模擬軟體和虛擬儀器編程語言labwindows / cvi ，對激光陀螺中的介質增益色散特性、頻率牽引效應、燒孔效應及模競爭、閉鎖效應及環激光的光強和相位特性進行模擬試驗研究，並且運用全量子理論，對激光工作原理進行分析，得出二能級系統單模輻射場的光子數密度分佈，得出激光場的光子統計分佈，模擬激光場的動態建立過程。
  3. We presents a detailed studied of the linewidth of parametric light in clbo - opo caused by the linewidth of pumping beam, off axis phase matching, divergence angle of pumping, time above threshold, high gain coefficient of nlo crystal, fluctuate of cavitylength, spontaneous radiation, according to the momentum and energy conversion laws, and the sellmeier equations of the clbo, we calculated curves of the type - i and type - ii compared with the bbo ' s

    根據能量動量守恆關系和clbo的色散方程，詳細分析了由於泵浦光的線寬、泵浦光偏軸泵浦、泵浦光的發散角、泵浦光功率超過參量光振蕩閾值一定倍數、高增益系數、有效腔長波動以及自發輻射引起的參量光線寬，並得到了與bbo晶體在類、類相位匹配下比較的理論曲線。
  4. This technique combines the edge - based finite - element method with physical optics ( po ) and physical theory of diffraction ( ptd ). the hybrid technique is applied to compute the scattering fields from the electrically large bodies with cracks and cavities on their surfaces. it is also used to analyze the scattering characteristics of microstrip antennas residing in a cavity mounted on metal objects with finite sizes

    本文採用edge - basedfem為基本方法，結合物理光學法（ po ） 、物理繞射理論（ ptd ） 、邊界積分方程（ bi ） 、區域分解技術（ ddm ）和完全匹配層（ pml ）吸收邊界條件等求解方法構成的混合方法，對電磁散射和輻射問題進行了研究，主要包括以下內容：提出了一種edge - basedfem與物理光學方法和物理繞射理論相結合的混合方法? fem po - ptd方法，並將該混合方法應用於帶有腔體或槽縫的電大尺寸導體目標的電磁散射特性分析和位於有限導體目標上的背腔式微帶貼片天線的電磁散射特性分析。
  5. According to the integral characteristic of pvdf film, two pvdf sensors are designed to measure adjoint coefficient of sound radiation mode in this paper. based on the theory of sound radiation and two - dimensional modal sensors equation, and taking a simply supported plate as example, we measure mode l, mode 2 and mode 3 adjoint coefficient of its sound radiation by the sensors

    本文是在聲輻射模態理論以及兩維分散式壓電傳感器方程的基礎上，利用pvdf獨特的積分特性，以簡支矩形板為例，設計了pvdf壓電薄膜傳感器用於測量簡支板第一、二、三階聲輻射模態伴隨系數。
  6. In 6. 635, topics covered include : special relativity, electrodynamics of moving media, waves in dispersive media, microstrip integrated circuits, quantum optics, remote sensing, radiative transfer theory, scattering by rough surfaces, effective permittivities, random media, green ' s functions for planarly layered media, integral equations in electromagnetics, method of moments, time domain method of moments, em waves in periodic structures : photonic crystals and negative refraction

    本課程所覆蓋的論題包括：狹義相對論、運動媒質的電動力學、色散媒質中的波、微帶集成電路、量子光學、遙感、輻射傳輸理論、粗糙表面上的散射、有效介電系數、隨機媒質、平面層狀媒質的格林函數、電磁學中的積分方程、矩量法、時域矩量法、周期結構中的電磁波：光子晶體和負折射率。
  7. Based on the vector radiative transfer theory and the characteristics of the sar technology, several sub - models for rice backscattering are constructed, including the leaf scattering model, the leaf extinction model, the trunk scattering model, the trunk extinction model and the water reflection model. then an integrated model for the first - order scattering mechanisms of rice, including all the main physical processes, is achieved

    針對合成孔徑雷達sar的技術特點，以水稻為研究對象，從矢量輻射傳輸理論vrt出發，通過模擬水稻主要器官稻葉和稻桿對電磁波的散射衰減作用等物理過程，建立了一套完整的水稻一次後向散射作用的物理模型，用以模擬水稻層的後向散射系數
  8. Through analyzing the principle of millimeter wave radiometer, the paper sets up the theory module of millimeter wave radiometer ' s output signal, measures the 3mm and 8mm band targets " radiation and scattering characteristic

    通過分析毫米波段輻射計的工作原理，建立毫米波輻射計輸出信號的理論模型。對3毫米、 8毫米波段目標輻射特性和散射特性進行測試，並對測試方法的可行性進行分析。
  9. The results show that there are two centers of occurrence of llsw respectively in dong bei and jiang nan ; the regional torrential rain over the yangtze river basin is closely associated with llsw during the major periods of heavy rainfall ; the diurnal variation of the number of occurrence in the middle and low reaches of the yangtze river is the strongest in china there are some significant differences between llj and nallsw in positive season, spatial variation, diurnal variation and field of pressure. by the way, the important effect of inertial stability on heavy rainfall with both low level south - westerly jet and high level northerly strong flow is analyzed theoretically. the results show that the existence of the maximum of inertial stability in the left font of the low level jet is favor of the accumulation of the moist thermal energy, and conditional symmetric instability or convective instability can be expected in this region

    另外，慣性穩定性的作用以往不受重視，本文通過對西南低空急流左前方和高空偏北大風軸右後方的慣性穩定性和對稱穩定性的理論分析和實例計算，表明慣性穩定性在伴有高低空急流的暴雨中有重要意義，揭示了梅雨暴雨的一種新的高低空急流耦合機制：低空急流左前方慣性穩定度大值區的存在，有利於低層濕熱能量的積累，使低層傾斜對流的不穩定發展更多期望于條件性對稱不穩定或對流不穩定；高空偏北大風軸（西風急流）的存在，是其右後方（右側）出現對稱不穩定的有利條件，高空相對容易出現干對稱不穩定；慣性穩定性的作用，使低層的傾斜對流更偏向於垂直方向，有利於對流發展，使高層的傾斜對流更偏向於水平方向，有利於高層輻散。
  10. The experimental results indicate that when the air flow rate is determined, the key problem for energy saving is how to keep the indoor thermal comfort at a suitable level and reduce the difference between the internal and external temperature of the room. a formula is gained for calculating the critical values of air exchange rate. when ventilating rate is greater than the value, radiating heating is the better way for energy saving, or else, convection method in heating is more suitable

    實測還指出，當通風量一定時，如何保證人體熱舒適度不變而減少室內外氣溫差將成為大通風量房間節約採暖能耗的關鍵，本文結合圍護結構傳熱機理，在對三種方式的能耗狀況進行理論分析的基礎上，提出了換氣次數的節能臨界值，若換氣次數高於此值，則輻射供暖是較好的選擇，否則，散熱器供暖是較好的方法。
  11. This paper mainly studies on the thermal diffusivity and thermal conductivity by ptr method

    本文主要用光熱輻射（ ptr ）技術理論來研究材料的熱擴散系數和熱導率。
  12. We give ptr ' s amplitude and phase signal of one dimension based on the theory of ptr, discuss the ptr ' s signal ' s frequency characteristic, and a method for measuring thermal diffusivity of opaque materials is introduced. then, we study on anisotropic materials " thermal conductivity, the temperature field and thermal conductivity tensor of anisotropic materials is theoretically deduced from the theory of ptr, and is proved by the experiment

    從光熱輻射理論出發，推導出一維情況下ptr信號的振幅和位相表達式，討論了光熱信號的頻率特性，介紹了一種用ptr技術測量不透明材料熱擴散系數的優化方法；接著研究分析了各向異性介質受調制激光束輻照下產生的光熱信號，在理論上推導出各向異性介質的溫度場以及熱導率張量並給予一定的實驗驗證。
  13. A new terahertz source of folded waveguide traveling - wave - tube which based on vacuum electronics is introduced, which may answer the question for scarcity of small, economical terahertz source with continuous wave of high average power. secondly, transmission characteristics of terahertz wave in the periodic slow wave circuit of folded waveguide traveling - wave - tube have been researched combined with development of micro - fabrication technology. dispersion relation and interaction impedance of the slow wave circuit are deduced by the way of equivalent circuit, and results accounted by theory are close to those simulated by software

    其次，結合計算機模擬技術對這種新型太赫茲輻射源的折疊波導慢波線路傳輸特性進行研究:用等效電路法從理論上推導了慢波電路場、色散關系及線路耦合阻抗，電磁模擬軟體計算得出的慢波電路色散曲線與理論計算所得結果基本上一致，表明這種尺寸的慢波電路在太赫茲頻段有著色散曲線較平坦以及寬帶、低損耗的良好傳輸特性。
  14. Using time - dependent mode matched scattering matrix method and based on the theory of the interaction between atom and electromagnetic field, we predict the effect that the longitudinal transport of electron is partly blocked by the lateral emitting electromagnetic wave and give detail analysis of the mechanism and the feature of the effect

    第三章我們以光和原子相互作用理論為基礎，用含時模式匹配散射矩陣方法研究了直量子線在太赫茲電磁場部分輻照下的電子輸運性質，並得出橫向電磁輻射對電子縱向運動的阻塞效應。
  15. In succession, the theory of chirped - pulse amplifier system is given in detail, firstly, studying from designing experimental light road and optical components to theoretical analysis, we par ' tly finished the system by ourselves. about ultr a - shoft pulse with a pulse - width of 9. 8f s and output power of 650mw and band - width of about l 20nm is output from oscillator source, secondiy, the stretching capacity of single grating four - pass stretcher is measured using abcd matrix combining collins function, and the effect of relativ e parameters to the streching ratio is also simulated. thirdly, a new type of disjunctional frequency moduiating function is provided according to the gain - narrowing and gain - saturation which are appeared in the co urse of amplification, under modulating the two effects are both controlled on some e xtent, fourthiy, the effect of ase that is often ignored by people is analyzed and the resolving methods are also given

    從光路、光學元件的自行設計到理論分析計算，初步建立了一臺實驗系統；採用abcd矩陣法結合collins公式計算了四通式單光柵展寬器的展寬量，並模擬了相關參數對展寬比的影響，對實驗具有指導意義；評價了再生放大器和多通放大器的優缺點，對放大過程中通常忽略的放大自發輻射現象（ ase ）進行了分析，並提出了相應的解決方法；針對放大過程中出現的增益窄化和增益飽和現象，對輸入種子脈沖提出了一種新的分段頻率調制函數，實現了對增益窄化效應和增益飽和效應的共同抑制；提出了系統的材料（包括放大介質和光路中的普通介質）正是融合高階色散的來源。
  16. On the base of mathematical domain decomposition method ( ddm ), this paper investigates systematically the quasi - static problems based on laplace equation, the transmission problems in waveguide based helmholtz equation and the three - dimensional scattering and radiation problems based on maxwell equations. the theoretical system is built for the further exploration of ddm in electromagnetic problems

    本文在區域分解法已有的數學基礎上，從基於laplace方程的準靜態問題，到基於helmholtz方程的波導傳輸問題以及基於maxwell方程的三維散射輻射問題，系統地探討了該方法在電磁領域中的應用，為進一步擴展應用研究建立了理論體系。
  17. According to big bang theory, the early universe is a hot, dense and opaque fluid of electrons and protons. this hot plasma constantly emits, scatters and reabsorbs photons and is the source of the cosmic background radiation

    根據大爆炸理論，早期的宇宙主要由電子和質子組成，是一團高密度極端熾熱不透光的等離子體，它不斷放射散射和吸收光子，是宇宙背景輻射的源頭。
  18. Describes the significant effect of high - tech park on the development of regional economy providing scientific basis for formulating high - tech park policy, analyzes the promotion mechanism of high - tech park to regional economy and points out the promotional effect of high - tech park is the spill - off effect produced by polarization and spreading effect, establishes an evaluation index system and synthetic evaluation model of radiation and promotion of high - tech park to regional economy, and attains the quantitative analysis and evaluation to the problem by applying the synthetic evaluation method

    高技術園區對區域經濟的發展有強烈地輻射和帶動作用.深入地研究這種輻射和帶動作用機理並進行合理評價，可以為制定高技術園區政策提供科學依據.根據區域經濟的增長極理論，分析高技術園區對區域經濟的輻射和帶動機制，認為園區對區域經濟的輻射和帶動作用是通過極化效應和擴散效應的疊加產生溢出效應的結果；在機制研究的基礎上，應用模糊綜合評價方法，建立高技術園區對區域經濟輻射和帶動的評價指標體系和模糊綜合評價模型，實現園區對區域經濟輻射和帶動作用的定量分析和評價
  19. Through all - sided theory analysis and demonstration study of rising and developing of university town in china, this paper tries to explore how it should veritably bring into play its diffuse function and eradiated function of economics, culture, education, society and so on toward city and how it should become the center of the city and so on, hoping more people will discuss this topic

    本篇論文通過對大學城在我國的產生、發展進行全方位的理論分析和實證研究，試圖探索大學城如何真正發揮它對城市、經濟、文化、教育等的巨大擴散和輻射功能，如何成為城市發展中心等問題，以期拋磚引玉。
  20. The main works and results are as follows : 1. by use of one order multiple scattering theory, light scattering and reflection by a single coating layer is analyzed. the variance of radiation intensity, bidirectional reflection distribution function ( brdf ) and laser radar scattering cross section with coating layer parameters is given, with the effect of rough contrast on bidirectional reflection distribution function

    本文主要研究了單層和多層塗層結構介質的光散射特性，以及近場條件下復雜目標對激光波束的散射，其主要工作如下： 1 、採用一階多重散射近似理論分析單層塗層對光波的散射和反射，計算並討論了輻射強度、雙向反射分佈函數和單位面積激光雷達散射截面隨塗層結構參數的變化規律，數值分析了粗糙基底對雙向反射分佈函數的影響。
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