相對極線 的英文怎麼說

中文拼音 [xiāngduìjíxiàn]
相對極線 英文
relative extremal
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 極 : i 名詞1 （頂點; 盡頭） the utmost point; extreme 2 （地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 相對 : 1. （面對面） opposite; face to face 2. （非絕對的） relative 3. （比較的） relatively; comparatively
  1. Based on projective geometry, the research works about 3d invariance ' s extraction and application have been done in this thesis as following : ( 1 ) the basic theories and concepts in projective geometry are systematically summarized. it includes : the camera models of perspective imaging, projective collineation, cross ratio, a simple compare about invariance ( invariant ) among some geometry transformations, fundamental matrix, epipolar and epipolar line in epipolar geometry, and so on. ( 2 ) the calculation methods for 2d projective transformation are extended from points to multi - element, which includes points, lines, points lines and so on, to get the relationship between two projective planes

    基於射影幾何理論，論文圍繞3d不變特徵的提取和應用進行了如下的研究工作： （ 1 ）系統總結了射影幾何中的若干基礎概念，包括：透視成像的相機模型、射影對應、交比不變量、基於不同幾何變換下的不變量的簡單對比、對極幾何中的基礎矩陣、對極點、對極線等。
  2. The original orientation ( i. e. the mol with respect to the geographical north ) of the core in the formation can be obtained by palaeomagnetic orientation tests. the two results are combined to define the direction of the maximum principle stress of the well or field

    該方法根據差應變分析（ dsa ）實驗確定地應力相對于巖心標志線的方向，利用古地磁方法確定巖心標志線相對于現代地理北極的方位，兩者結合確定地應力方向。
  3. By studying the geometry relationship among the corresponding points on three different projective planes based on epipolar geometry, it obtained the trilinear tensor constraining corresponding points of different view

    該方法在極線幾何的基礎上，通過研究物體在3個不同透視投影平面上對應點之間的相互關系，得到描述不同圖像上對應點關系的一個三線性張量。
  4. First, proper initial conditions between ekv and target are the premise of hit - to - kill. capture region is described by equations of relative motion defined in modified polar coordinate while phasetrajectory graph is introduced. and the disturbance of initial condition biase is analyzed by cadet through statistical linearization of ekv dynamical model

    本文在修正極點坐標系中建立攔截器和目標之間的相對運動方程，結合相平面軌跡圖，分析了大氣層外動能攔截器的攔截區;對大氣層外動能攔截器動力學模型進行統計線性化，採用協方差分析描述函數法，分析了初始狀態誤差對彈道的影響。
  5. Performance for a piezoresistive transducer pressure sensor to thermal and pressure environments can be predicted by finite element method. a simplified 1 / 8 model, considering silicon dioxide and nitride process as well as stack anodic bonding and adhesive bonding processes, was developed. the fem results were found to be comparable to experimental data. case studies suggested that pyrex stack induces certain amount of non - linearity, while it isolates hard epoxy nonlinear effect. flexible epoxy bonding or soft adhesive bonding is preferred to the packaging process. the viscoelasticity and viscoplasticity of bonding material will result in hysteresis and drift errors to sensor output. however, soft adhesive s influence on sensor can be ignored under relative stable environments. more over, detailed design and process information will help to improve modeling application

    熱、壓環境下壓阻變換壓力傳感器的性能可以通過有限元方法預測.這里研究了簡化的1 / 8模型，模型考慮了二氧化硅和氮化硅生成過程及堆陽極鍵合和膠粘結合過程.結果發現有限元預測結果和實驗數據具有可比性.範例研究表明，硼硅堆導致產生一定的非線性，但它隔離了硬環氧樹脂的非線性.在包裝過程中最好使用柔性環氧黏合或軟黏膠性結合.黏合材料的黏彈性和黏塑性將會導致傳感器輸出的滯后和漂移誤差.然而，在相對穩定的環境下，軟黏合劑對傳感器的影響可以忽略.此外，詳細的設計和過程信息有助於提高模型的適用性
  6. With the rapid development of optical fiber communication technology, low - cost and high quality near infrared laser and light emitted diode working at room temperature become widely available. the emit wavelength from these light resource is not only consistent with the three low - decay windows of fiber optics, but also with many wide - frequency or recombination absorption spectrum of environmental and industrial gases

    光纖通信技術的發展使相對低價、工作于常溫、高質量的近紅外激光器和發光二極體可廣泛獲得，這些發光光源的發射波長與光纖的三個低損耗窗口相一致，也與許多環境和工業氣體的泛頻或復合吸收譜線相一致。
  7. Located in the northwest end of penglai urban area, facing penglai pavilion in the east and neighboring the biggest ocean polar world project, connecting with the special travel ports ( penglai port ) from penglai to changdao island, dalian and lushun in the north, closing to penglai haibin dadao in the south and facing the west garden of penglai pavilion in the west, the project is a golden section of seashore holiday travel

    該項目位於蓬萊市區西北端，東與蓬萊閣相望，與中國最大的海洋極地世界項目相臨，北與蓬萊至長島、大連、旅順航線的旅遊專用港口（蓬萊港）相連，南與蓬萊海濱大道緊靠，西與蓬萊閣西苑相對，屬海濱度假旅遊的黃金地段。
  8. Simple genetic algorithm gets local minimization too easily and converges slowly. to solve these problems, adaptive crossover rate that has reverse hyperbolic rel ation with the numbers of iteration is designed, and adaptive mutation rate that has reverse proportion to the distances of parents and reverse exponential relat ion to the numbers of iteration is put forward. the practical simulation results show that the adaptive ga has greater convergence speed and larger probability o f getting the best solution

    簡單遺傳演算法存在著收斂速度慢、易陷入局部極小等缺陷.針對這些缺陷，本文設計出隨相對遺傳代數呈雙曲線下降的自適應交換率，並提出與父串間的相對歐氏距離成反比、隨相對遺傳代數指數下降的自適應變異率.實例驗證表明，具有自適應交換率和變異率的遺傳演算法在收斂速度和獲得全局最優解的概率兩個方面都有很大的提高
  9. This paper provides the general equations of the theoretical contour line and the actual contour line of roller translation follower and roller oscillating follower disc cam in the polar coordinates system and the rectangular coordinates system, respectively. the equations are not only fit for the different layouts of the relative position of follower and cam, but also fit for the different types of cam contour

    分別給出了滾子直動從動件和滾子擺動從動件盤形凸輪的理論廓線及實際廓線在極坐標系與直角坐標系下的通用方程，它們對于從動件與凸輪相對位置的不同布局方式及凸輪輪廓的不同類型均適用
  10. The performance of the pbg antenna using the new pbg cover together with a pbg substrate is studied by the fdtd method together with the pml boundary treatment. the numerical results show that a more focused beam radiated in the broadside direction is achieved. the gain of the pbg patch antenna in the forward direction is improved by about 6 db. the radiation directivity is improved significantly and reaches 11. 5 db, which is 0. 4 db less than the maximum value that is allowed physically for this size of the antenna ( this difference is about 4. 1 db less than the difference achieved by thevenot et al.,

    用fdtd方法並結合pml吸收邊界條件，我們對加了這種新的覆層結構並且基底鉆孔的復合結構電磁（光子）晶體貼片天線的性能進行了研究，結果證明加了這種新的電磁晶體覆層結構以後，天線的波束收攏很多，並且向前輻射的增益大大提高，與普通天線相比，天線的e面和h面方向圖上向前輻射的增益均提高了約6db ，另外，該復合結構天線的方向性系數達到了11 . 5浙江大學博士學位論文db ，與該物理尺寸天線的方向性系數的理論極限值（ 11 . 9db ）相差0 . 4db ，該差值比thevenot等人設計的電磁晶體覆層天線的相應差值減少了約4 . 1db ，比qiu等人設計的電磁晶體天線的相應差值減少了約1
  11. Secondly, to counter contour curve for large sole of rubber overshoes, the way of linear circle arc spline of two dimensions curve fitting has been raised in this paper and autocad has meanwhile been applied in cad / cam integeration system of rubber overshoes mould, and also a whole set of software and hardware technique developed, and the selecting way for optimizing tool path worked out. this way may make nc machining free running minimun

    其次，針對膠鞋大底的輪廓曲線，對圓弧樣條進行了深入研究，提出了二維曲線擬合的線性化圓弧樣條方法；同時將autocad應用於膠鞋模具cad / cam一體化系統中，成功地開發了一整套相應的軟硬體應用技術，提出了刀具軌跡優化的動態選擇法，以便使nc加工的空行程相對極小化。
  12. But in the earth ' s case, the lines connecting the north and south poles are skewed at the equator, where they should be parallel, in what ' s termed an inclination anomaly

    但相對地球磁場，連接南北極磁線在赤道位置變形了，在本應該是平行的地方，通俗地講曲率變得不規則了。
  13. Now we are busy fitting and testing the asipp single - ion microbeam facility. the main work in this paper are as following : testing the performances of bend magnets and magnetic quadruple, simulating the course of beam - line transport, realizing the function of count of the number of radiated ions & control of the electronic beam shutter, calculating different voltage worked on the beam shutter of different beam - line, probing into some factors that may influence the controlling precision and providing some method to solve them

    本課題所做的工作主要是對偏轉磁鐵、磁四極場進行性能測試和對束線的傳輸進行模擬計算；編程實現離子記數和束開關的控制；計算出使用不同束線時束開關上所應該加上的電壓值，並且對可能影響控制精度的因素進行了一些探討，並提出相應的解決方案。
  14. In recent years, wireless communication systems have made a great progress world - wide. the number of mobile subscribers has been increasing rapidly, at the same time, there is more and deeper demands of the mobile subscribers for more sorts of wireless services and higher quality services, thus the demand of the rate data is higher

    近年來，無限通信技術在全球范圍內得到了迅速發展，移動通信系統的用戶數目極快地增長，同時用戶對無線服務的質量、業務等方面的要求也越來越高，因而對數據傳輸率的要求也相應提高。
  15. The simulated results show that we can improve the sensitivity by setting the optical bias at / 2, reducing the gap of electrode, increasing the overlap integral factor, reducing the insert lose, adopting suitable segmentation number, increasing the electrode length, increasing the optical power, reducing the wavelength and the relative intensity noise and reducing the receive bandwidth ; obtain the wider bandwidth utilizing reducing the electrode length and the capacitance of modulator, segmentation the electrode ; increase the dynamic range using lowering noise, increasing the optical power at the detector and lower optical bias

    通過計算得知，使傳感器相位偏置為/ 2 ，減小電極間距，提高電光重疊因子，減小器件插入損耗，採用合適的分段數，增加電極長度，增大光功率，降低激光的波長，減小相對強度噪聲，減小接收帶寬，對提高靈敏度的效果是非常明顯的。而減小天線長度，降低調制器電容，電極分段，都可以獲取較大的帶寬。降低系統噪聲;增加到達探測器的光功率，採用較低的光學偏置，都可以增大線性動態范圍。
  16. From the se algorithm, the relationship between the local minimum and the equalizer delay is demonstrated, and it is more accurate compared to the system delay relation formulation

    ?圍繞線性均衡器的時延極小值問題，從超指數演算法推導了線性均衡器相對于均衡器時延的極小值關系，修正了線性均衡器相對于系統時延的關系式。
  17. Because of radio wave propagating along the ducts with enhanced fields on the order of the free - space field, the problems of the co - channel interference are more complicate for communication systems with the results of intersystem interference and the formation of other system, and therefore affecting the determination of the coordination distances or the optimization of the distribution and separation of delay, and for surveillance system such as radar system the problems can be radar holes or the extensions of detect range

    對于通信電路，它使系統間的相互干擾問題變得復雜，既可能幹擾其他系統又可能形成另外的系統，從而影響系統的有關參數如中繼電路的最佳組合（分佈、間隔）和協調距離，對于探測系統產生的則是雷達空洞、超視距探測等問題。這些問題對相關無線電系統特別是軍事應用系統可能是致命的，因而以波導傳播為代表的反常傳播特性研究受到極大重視。
  18. Both absolute difference and relative difference among per capita gdps of 14 cities ( prefectures ) increased year by year since 1990 - the absolute difference increased linearly - - and this increased tendency would n ' t change in short period. by counting the discrete and ratio between per capita gdp of every city ( prefectures ) and that of the total province, the relative development speed of every region and the industrial structure of every region, i think that the characteristic of the spatial structure of regional economic difference in hunan is that the area along the beijing - guangzhou railway line in the east of hunan developed fast, while the vast area in the west of hunan developed slowly, so the regional difference increased constantly. on the difference background between the east and the west of hunan, there is the difference between central region and fringe region, for one thing it shows ring difference, namely chang - zhu - tan internal ring, surrounding chang - zhu - tan medium ring, the outermost external ring, the most underdeveloped counties lie on the fringe and mountain regions in the west, south and east of hunan, for another it displays that the peripheral regions of 13 prefectural cities are more developed than the other

    文章還建立了反映基礎設施水平、經濟發展水平、社會發展水平的23個主要指標構成的湖南省區域差異衡量指標體系，在此基礎上，藉助spss統計分析軟體，運用主成分分析法，對湖南省14個市州經濟發展綜合水平的差異狀況進行了研究，結果表明：長沙市的經濟發展綜合水平在14個市州中遙遙領先，反映了湖南省經濟發展空間結構的「單極主導」特徵；通過計算人均gdp的標準差和標準差系數，研究區域經濟差異的總體水平及區域經濟不平衡發展的演變趨勢，發現90年代以來湖南省各市州人均gdp的絕對差異和相對差異都在逐年擴大，其中絕對差異隨年份直線上升，且這種差異擴大的趨勢在短期內難以改變；通過計算各市州人均gdp與全省人均gdp的離差和比率、各市州發展速度的差異及產業結構的差異，認為湖南省區域經濟差異的空間特徵是：湘東京廣沿線地區基礎較好，發展較快，湘西地區發展緩慢，地區差異不斷擴大；通過以縣為對象的差異研究發現在湘東湘西差異的大背景上還有核心區與邊緣區的差異，它一方面表現為長株潭內層、圍繞長株潭的中層、更遠的外層的圈層差異特徵，最落後的縣分佈於湘西、湘南、湘
  19. Artificial feature landmark is first leaded into vision computation in this paper. our approach is to extract marker points and to use correlation to find an initial set of matches, then use relaxation, robust recover epipolar geometry and reprojection to discard false matches in this set and find more matches

    首次將人工圖標引入視覺計算，通過提取人工特徵點，採用灰度相關法進行初始匹配，再利用鬆弛法、魯棒估計基礎矩陣恢復極線約束和結構再投影法剔除錯誤匹配點、尋找更多匹配對。
  20. But it is n ' t ideal because it is fallible in solving down - to - earth questions. for example, it is easy for the system to fall into local optimization state when learning algorithm is unsuitable. furthermore, there is a conflict between the complexity of network and generalization ability

    而神經網路具有一些獨特的優點，如非線性映射、容錯能力等，因而相對于其它方法，神經網路在數據挖掘中具有更大的前景，但神經網路也存在一些問題，比較典型的包括在學習演算法選擇不當時，系統易陷於局部極優狀態，網路的復雜度與泛化能力之間存在矛盾等等。
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