高階反射 的英文怎麼說

中文拼音 [gāojiēfǎnshè]
高階反射 英文
high order reflection
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 階 : 名詞1. （臺階） steps; stairs 2. （等級） rank 3. [醫學] （耳蝸的三個螺旋管的任一個） scala 4. [數學] order 5. [地質學] stage
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 高階 : high [higher] order高階導數 higher derivative; higher order derivative; derivative of higher orde...
  1. By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent

    最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。
  2. With the development of science and tecbnology, the electronic warfare has gotten to a new stage, electronic jammers, anti - radialized missiles, superlow altitude attacks have turned into great threats confronted with radar nowadays. former single - based radar not only had difficulty in finishing expected tasks, but also the survival of itself had been a pressing problem, people have to probe into multifarious countermeasures in order to improve the viability and effective work - capacity

    隨著科技的發展，雷達電子戰發展到一個新的階段，電子干擾、反輻射導彈、低空突防和隱身武器已成為當今雷達面臨的四大威脅。傳統的有源雷達不僅很難完成預定的任務，而且自身的生存也成了緊迫問題，人們不得不積極探討各種對策，以提高雷達的生存和有效工作能力。
  3. Super - resolution spatial spectrum estimation is applied in this dissertation to realize bearing resolution by utilizing the different bearings between targets and first - order sea echoes. the simulation of radar echoes in one resolution cell is presented based on the theoretically analyzing hf sea clutter sea clutter reflection characteristic and sea echo spectrum stretching mechanics

    本文從分析高頻海雜波反射特性以及平臺運動引起海浪展寬機理入手，建立便於理論研究的一階展寬的海雜波和二階海雜波模型;在分辨單元上對雷達回波信號進行了模擬。
  4. Principal conclusions were drawn as the following : the non compatibility of pressure or velocity of the gas on both sides of the contact surface is the cause of the formation of shock wave ; the heating effect of reflective shock wave to driving gas during charging or exhausting process is the internal mechanism of peak oscillating effect, and all the factors that influence the formation and the running of the shock wave will influence the peak oscillating frequency, cooling effect

    主要結論如下：熱分離機內激波形成的原因是射氣瞬間接觸面兩側壓力和速度不相容；峰值振蕩效應的內在機制為反射激波對充氣階段的驅動氣或低溫排氣的加熱，凡是影響激波形成及運動的因素都將對峰值振蕩頻率、冷效應及熱效應產生影響；當充、排氣時間比為0 . 1763時，最佳射流激勵頻率出現在高階峰值振蕩頻率上。
  5. Biology, etc. owing to many merits has not yet been used to measure parameters of gratings. the paper researches on the subject in view of current lack of it. the main tasks of the paper include : analyzing ellipsometric characteristics of gratings in detail with vector diffraction theory and ellipsometrics ; devising a reflective quarter wave plate at normal incidence according to some ellipsometric characteristics ; making use of normal simplex algorithm during ellipsometric inversion of gratings parameters, inversing ellipsometric parameters with gaussian noise of different standard deviations to simulate actually measured values with examples of isotropic metallic and anisotropic step gratings and testing that ellipsometry about gratings parameters is feasible with the range of certain precision ; discussing choice of incidence angle at length

    本論文的主要工作包括：結合光柵的矢量衍射理論和薄膜的橢偏理論，詳細分析了光柵的橢偏特性；並且根據一些橢偏特性設計出一款正入射反射型單波長1 4波片；在光柵參數的橢偏反演中，引入正單純形法作為反演演算法，分別以各向同性的正弦形金屬光柵和各向異性的階梯型光柵為例，在標準橢偏值的基礎上加入不同偏差的高斯噪聲來模擬實際的橢偏測量值進行反演，在一定精度范圍內得出滿意的光柵參數，說明光柵參數的橢偏測量是可行的；還就入射角的選取問題進行了一定的探討。
  6. But to circular plate with large surface area, the vibrate modes generated is often so high that there is reverse phases existing, which result in a decrease in radiation impedance, electric - acoustic efficiency and the electric power, as well as poor directivity

    然而對于輻射面積較大的彎曲振動圓盤，一般激勵的振動階數比較高，因此存在彎曲振動的反相區，導致換能器的輻射阻抗下降，電聲效率和聲功率降低以及指向性變差等問題。
  7. The first chapter states out three crucial opinions of mst theory : action - ontology, mechanism of control, and concept and classification of mst. the second chapter talks about the evolutionary opinions of turchin by introducing general evolution theories of k. popper and d. t. cambell. it also explains five stages of life ' s evolution which turchin used mst to describe : stage of simple reflex, stage of complex reflex, stage of high animal, stage of human being, and stage of social integration

    緊接著從四個主體部分來闡釋這一理論：第一部分詳細敘述了元系統躍遷理論的三個核心要點，分別是，把世界的終極實在看作是「行動」的行動本體論、多層次的控制機制論以及元系統躍遷的概念與分類；第二部分通過介紹波普爾和坎貝爾的廣義進化論思想來闡明圖琴關于進化的基本觀點，而重點在於解釋他用元系統躍遷描述的生命進化的五個階段：簡單反射階段、復雜反射階段、高級動物階段、人的階段以及社會的整合階段；第三部分通過把復雜性看作是系統的一種不可還原的性質，從而把復雜性與系統層次突現聯系起來。
  8. Three shaped profiles ( parabola, linear, and exponential ) have been considered. the exponential dispersion profile fiber loop is optimal for the propagation and compression of picosecond pulse. on the contrary, the parabola dispersion profile fiber loop is optimal for femtosecond pulse due to the high order effects such as the third order dispersion ( tod ), stimulated raman scattering ( srs ) and self steeping ( ss )

    （ 3 ）研究不同色散遞減類型（拋物線遞減、線性遞減、指數遞減）光纖構成的環形腔中傳輸的特性，發現其色散曲線為指數遞減型光纖有利於皮秒光脈沖的傳輸與壓縮；而對于飛秒脈沖，由於三階色散（ tod ） 、脈沖拉曼自散射（ srs ）及自變陡（ ss ）等高階非線性效應的影響，情況恰恰相反；色散曲線為拋物線遞減型的光纖構成的光纖環最有利於脈沖傳輸與壓縮。
  9. With large diameter logic valves and precise flow control valves, a short response time with low shock values and an accurate adjustment in three phases injection can be achieved

    壓射系統配用大口徑邏輯閥及精密流量控制閥，提高了壓射反應和減低油壓震蕩，並且提供了精確的三階段壓射調校。
  10. The second part brings forward a new ar - model - based arm detection method based on features of arm and characteristics of velocity and acceleration of the radar echoes. by establishing two - order ar models, this new detection method computes the poles of models representing different targets, thus estimates the acceleration of the targets so as to determine the nature of the targets. furthermore, this method can not only be applied when the arm is being tracked by radar, but also be put into use in radar ’ s seeking and scanning times

    第二部分則是根據反輻射導彈（ arm ）的特點及其雷達回波信號中速度、加速度等特徵，提出了一種新的基於ar模型的arm檢測演算法，該方法通過建立二階ar模型、估計代表不同目標的模型極點，並由此估算目標加速度來判斷目標性質，該方法不僅可以在雷達已跟蹤上arm后採用，而且適用於雷達搜索掃描時使用，模擬結果表明該方法具有解析度高，對雷達脈沖重復頻率（ pulserepetitionfrequency ， prf ）及積累脈沖數要求不高的特點，在低的prf及少的積累脈沖下，利用該方法仍可有效地識別檢測arm 。
  11. The thesis points out that while large investment in agriculture has not started, small towns in yuebei mountain area should have pre - consciousness. they can not completely copy the experience of " industrialization of village " in coastal developed area. they should make full use of their specific characteristics and advantages to develop anti - magnetic nucleate towns, so as to strengthen their magnetic force and influence, therefore counter against the strong appeal of factor of production and create conditions to meet the industrial expand from the developed pearl river delta

    文章概述了「反磁力型」中心鎮的思想淵源和區域基礎，指出在工業發展尚未達到反哺農業的階段，粵北山區小城鎮應當具有超前意識，利用自身優勢和特色發展「反磁力型」中心鎮，提高其吸引力和輻射作用，從而抗衡沿海發達地區對生產要素的強大吸引力，同時也為下一階段接受珠江三角洲等沿海發達地區產業擴散創造條件，而不能一味地模仿沿海發達地區「農村工業化」的路子。
  12. Picture that put forward in the article graph and data structure reciprocal mapping support not merely to map graph from data structure efficiently, besides, regard graphics element as a unit, analyze and discern to user ' s modified graph, produce the corresponding data structure automatically, maintain consistency of graph and data structure efficiently on the foundation of expanding case graphic tools effectively, we direct against the intrinsic characteristic of traditional waterfall model, proposesmall loop model to software analysis based on graph and data structure reciprocal mapping solve problems of slow information feedbackand high track back cost efficiently

    文中提出的圖數互逆映射的思想，不僅對數據結構到圖形映射進行高效率地支持，同時，以圖形元素為單位，對用戶修改後的圖形進行分析和識別，自動生成相應的數據結構，有效地維護了圖數一致性。在對case圖形化工具進行有效擴展的基礎上，我們針對傳統瀑布開發模型的固有特點，提出了基於圖數互逆映射的軟體分析小循環模型，有效解決了傳統軟體分析設計階段信息反饋慢、回溯代價高等問題。
  13. A novel signal processing method based on alternate feature optimization is introduced and analyzed in this thesis. and a new underwater target recognition system using the optimized feature and svm is presented here. the system utilizes the alternate feature extraction method to optimize the feature selection process

    提出了高階量1 （ 1 / 2 ）維譜和小波變換交互分析進行特徵提取的方法，比較好地反映了艦船輻射噪聲的非線性、非平穩和非高斯特性。
  14. Based on the normal equation algorithm to fir system identification and wavelet iteration, a method to estimate the wavelet from the third - order cumulant of field data is developed. due to the fact that higher order cumulant retains the phase information of the signal, and can suppress the gaussian noise ( color or white noise ) naturally, we can improve the time resolution via inverse filtering the wavelet estimated

    本文在基於高階累積量的fir系統辨識基礎上，利用觀測信號的三階累積量對探地雷達子波進行估計，提出一種簡單的迭代演算法改善了波估計性能，據此進行反褶積，改善反射信號的信雜比和時間解析度。
  15. It is well known that the coupled interactions between the ship hull and the surrounding fluid field of explosion give rise great influence to both the fluid loadings over the structural wetted surface and the responses of the hull. jt is the coupling effect that provides the major difficulties in the underwater explosion induced dynamic responses of the ship structure. the second order doubly asymptotic approximation method ( dda2 ) has been commonly employed in the world to deal with the coupling effect

    本文針對daa方法不適合於分析敷有聲阻抗與水差不多的聲學材料（如玻璃鋼與消聲瓦）的船體結構與水下沖擊波相互作用的局限性，依據聲波的反射和透射原理對二階daa方法的高頻段進行了改進，發展並提出了能夠分析聲學材料流固相互作用的adaa方法（ acousticdaa ） ，拓展了應用范圍，使現有的二階daa方法成為它的一個特例。
  16. We combined the cvd technique with the pecvd technique by adding a dc or rf electric field to the reacting region of cvd device, and improved the inputting method of reaction gases, then had executed a diamond film growth system. the advantages of our system are : ( 1 ) reaction power, which can enhance the density of the plasma in the reacting region, is supplied with the heat filament and the dc electric field, or with the heat filament and the rf electric field both of them can be controlled precisely and they are complementary to each other

    將熱絲cvd技術與pecvd技術相結合，在薄膜的成核和生長階段分別給反應區再施加一個直流和射頻電場，同時改進反應氣體的進氣方式，製成具有下列兩大特點的金剛石薄膜生長系統： （ 1 ）反應功率由熱絲和直流電場或熱絲和射頻電場共同提供，兩者互相補充，可精確控制，大大提高了反應區的等離子體密度； （ 2 ）能精確控制反應氣體的分佈、流量及流速。
  17. In this paper applications of wavelet packet analysis, higher order cumulant method and some image processing method in the processing of gpr data acquired from subsurface target backscattering are presented, which includes the following contents : methods to denoise and suppress background clutter for target detection ; to improve the time resolution for target position ; target recognition

    本文討論了小波包分析、高階累積量分析及圖象處理方法在沖擊脈沖探地雷達淺層反射信號處理中的若干應用，包括對目標去噪、確定目標時間位置及進行目標識別方法的研究。
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