line convergence 中文意思是什麼

line convergence 解釋
行會聚
  • line : n 1 線;繩索;釣絲;測深度用繩,捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
  • convergence : n. 1. 聚合,會聚,輻輳,匯合。2. 集合點;【數、物】收斂;【生物學】趨同(現象)。
  1. The relation of radius of curvature and error as well as formulas of increasing parameters on condition of constant error are diverted. the equation of the line on the center of approximate circular arc is obtained , and it can avoids the trouble that numerical solution owns possibility of no convergence and simplifies node calculation of non - circular curve

    導出了曲率半徑與逼近誤差之間的關系和等誤差條件下的參數遞推公式,建立了通過逼近圓弧圓心的直線方程和圓心坐標計算公式.按這種方法用圓弧逼近平面參數曲線,不需要求解非線性方程組,避免了計算可能不收斂的麻煩,簡化了非圓曲線的節點計算過程
  2. At any point the convergence is the angle between the meridian as represented on the plane and the n grid line.

    一點上的收斂角是子午線在平面上的投影與N坐標線之間的角度。
  3. The result indicates that, in the course of the rainstorm in huoshan, there are obvious low - level jet of great intensity, infection of mesoscale shear line, enhancement of plus vorticity which increases intensity of convergence, improves ascending velocity and brings on precipitation, and quick enhancement of helicity which provides the basis to forecast, in addition, convergence of moisture flux and analyzed potential vorticity which reflects baroclinic convective instability sufficiently indicate the characteristics of the rainstorm

    結果表明:此次霍山暴雨發生前後,存在明顯的大強度低空急流,並受到中尺度切變線的影響,而且正渦度的加強引起了輻合加劇,提高了上升速度從而引起降水,同時暴雨發生前螺旋度的迅速增強,也為預報提供了根據,另外水汽通量的輻合以及分析位渦反映出的斜壓對流不穩定都充分體現了這次降水的特點。
  4. Global convergence of non - quasi - newton merhods with a class of inexact line searching

    帶一類非精確線搜索的非擬牛頓演算法的整體收斂性
  5. He unbuttoned successively in reversed direction waistcoat, trousers, shirt and vest along the medial line of irregular incrispated black hair extending in triangular convergence from the pelvic basin over the circumference of the abdomen and umbilicular fossicle along the medial line of nodes to the intersection of the sixth pectoral vertebr aelig ;, thence produced both ways at right angles and terminating in circles described about two equidistant points, right and left, on the summits of the mammary prominences

    然後又反過來自下而上地依次解開背心長褲襯衫和內衣紐扣。他那雙手的軌跡從參差不卷縮起皺的黑色體毛的中心線也就是自骨盆底到下腹部肚臍眼周圍那一簇簇體毛,又沿著節結的中心線進而延伸到第六胸脊椎的交叉點,從這里又向兩側叢生,構成直角形,在左右等距離的兩個點,即環繞乳頭頂端形成的三角形收斂圖形的中心線穿行。
  6. Convergence of line search methods for unconstrained optimization

    無約束優化問題線搜索方法的收斂性
  7. In a flowchart, the means of representing the convergence of more than one flow line into one, or the divergence of one flow line into more than one. it may also represent a break in a single flow line for continuation in another area

    在流程圖中,用來表示把一條以上的流程線匯集成一條或者把一條流程線分成多條的符號,也可表示單條流程線的斷點,在另外地方繼續連接。
  8. The analysis of the large - scale synoptic situation shows that strong precipitation is closely related to the explosion of monsoon and the intensification of cross - equatorial flow which bring a lot of vapor and meet with cold masses at the eastern of northwest district on 8th, june causing extremely heavy rainfall ; that subtropical high - level jet at 200hpa, subtropical high at 500hpa and low - level jet at 850hpa are the weather backgrounds favorable to strong precipitation ; that the pattern of eastern highs and western lows and the establishment of a low - level jet and the coupling between upper - and low - level patterns that determine that the rain occurred in the east of the northwest china ( on average, this is the rainy season for the south of china, but not for the northwest china ) ; that water vapor comes from southerly and easterly flow which converge at the eastern of northwest district with convergence mainly in lower levels and pbl ; that the high value of the whole - level apparent heat source < q1 > is near the area of large rainfall in the direction of northeasterly - southwesterly agreeable to shear line very well and the condensation latent heat releasing is main heat source with vertical advection item playing key role in q1 and q2 ; that there is a vertical secondary circulation crossing low - lever jet whose ascending branch is at the area of large rainfall ; that the construction of convection instability and conditional symmetry instability results that there is not only deep thermal instability, but also moisture influx and triggering mechanism of thermal instability causing strong torrential rain

    作為對比,本文還對2002年6月24 - 25日發生在北京地區的強地形雨進行了分析,並討論陜南、北京地區兩地暴雨的異同點以及地形作用的共性和個性,為兩地暴雨預報提供有益的參考,得出了一些很有意義的結果: 1大尺度環流背景分析表明: ( 1 ) 「 02 . 6 」強降水與6月上旬越赤道氣流和季風爆發密切相關,攜帶大量水汽的偏南氣流與冷空氣於6月8日交匯在西北地區東部,導致了這次強降水的發生; ( 2 ) 200hpa的副熱帶西風急流、 500hpa副高以及850hpa的低空急流的配置非常有利於本文分析之陜西強降水的發展與維持。大尺度形勢分析表明,東高西低形勢場、低空急流的建立和高低空形勢的配置決定了這場降雨出現在西北地區東部。與暴雨區相聯系,存在一支橫越低空急流的經向垂直環流,暴雨區處于該垂直環流的上升支; ( 3 )偏南和偏東氣流水汽通道在西北地區東部交匯,水汽的輻合積聚主要在對流層低層和行星邊界層內完成; ( 4 )整層的視熱源< q _ 1 >高值區在暴雨區附近呈東北-西南向分佈,與切變線走向非常一致,降水產生的凝結潛熱釋放是強降水區大氣的主要熱源。
  9. Based on t213 and other observational datasets, a severe heavy rain occurred in changjiang - huaihe basins during 4 - 5 july 2003 is studied. the primary diagnostic analyses show that double or single block is the characteristics of the macroscale circulation in this rainfall process. the strong conflict of warm and cold mass, mesoscale convergence on meiyu front, shear line, and stably maintaining of high and low jets make for the rainfall

    本文採用地面高空常規資料,每6h一次的降水資料,以及t213數值預報資料,對2003年7月4 - 5日發生在江淮地區的一次梅雨鋒暴雨過程的影響系統及其可能機制進行了初步的診斷分析,發現,高緯雙阻、單阻形勢是這次暴雨過程發生的大尺度環流特徵;冷暖空氣的激烈交鋒、梅雨鋒上的中尺度輻合線、 700hpa 、 850hpa上的低渦、切變線以及穩定維持的高低空急流是導致這場暴雨的直接影響系統;該地區維持一個高能、飽和、潛在不穩定的環境,有利於特大暴雨的產生和維持。
  10. The main relative systems of heavy - hard rainfall in northeast plateau are western pacific subtropical high, south asia high, low latitude systems, upper level jet ( ulj ), low level greater wind speed axes, westerly trough and plateau trough, low level vortex, cold frontal, occluded front in qinghai lake, mesoscale low pressure, heat low - pressure in qinghai, shear line and convergence line, mesoscale cloud cluster, etc. the west subsidiary model of south asia high is the main circulation type of heavy - hard rainfall in this area

    3 、西太平洋副高、南亞高壓、低緯系統、高空急流、低空大風速軸;西風槽和高原槽、低渦、冷鋒、青海湖錮囚鋒以及中尺度低壓、青海熱低壓、切變線與輻合線、中尺度雲團等系統是高原東北部地區大到暴雨的主要相關系統。 100hpa上的南亞高壓中心強度加強,位置東西擺動預示高原地區將有降水產生,中心強度減弱,降水過程結束。南亞高壓西部副型是高原東北部地區大到暴雨的主要流型。
  11. The results here improve and generalize those in the literature. in addition, a new step - size rule, which need not a line search, is presented for the damped gauss - newton algorithm. a nice global convergence result is obtained

    同時,我們給出了一種不需要線性搜索的新的步長選擇方法,研究了在此步長規則下的阻尼gauss - newton方法,得到了一個更好的全局收斂結果。
  12. An axial direction line multi - sensors placed method is presented. in the process of machine learning, use genetic algorithm to fit the curve of sensor ' s output. to improve the convergence speed of genetic algorithm, hill climbing method is joined with

    對示教過程中進行曲線擬和所用的遺傳演算法進行了一定的研究,為了解決遺傳演算法在接近收斂點時收斂速度慢的缺點,使用爬山法對其進行改進。
  13. The new algorithm starts from an initial estimate which is based on the hough transform, and a rectangular window is centered using the current line approximation, and a new line estimation is generated by making a total least squares fit through the pixels contained within the window. this is repeated until convergence is reached. lastly, we have suggested a new technique which may recover the motion and structure parameters of a moving object by using of 21 optical flow lines based on the optical flow fields of the feature line this thesis is the project supported by aeronautical foundation science ( no. 99f53065 ) and research center of measuring and testing technologies, and control engineering in nanchang institute of aeronautical technology ( no. 2001 - 15 )

    演算法的思路是:首先,在小區域內運用霍夫變換確定直線的初始值;其次,以直線的初始值所對應的直線為中心線,建立一個矩形框;最後,利用矩形框內所包含的邊緣點數據不斷地迭代直至收斂,從而達到進一步修正直線的坐標參數;本文基於特徵直線的光流場,即線流場,建立了一種利用21條光流線確定空間三維物體旋轉運動參數、平移運動參數以及對應的空間直線坐標的線性演算法。
  14. By means of the corollary of 3. 5 which stated that carrying on double wavelet transform to the signal would not change the convergence of modulus maxima line when scale comes to zero, this thesis put forward a new measuring method

    當信號中混入較大的噪聲時,這種方法仍然可以實現瞬態信號波至點的精確檢測。採用matlab及wavelab工具箱對本論文所提出的方法進行設計及模擬研究。
  15. The computation results are satisfying and prove that adjustable - blade pump on - line autoregulation can be done with good accuracy and convergence in realtime

    計算結果表明,轉槳泵進行在線自動調節具有很好的實時性、精確性,收斂性也較好。
  16. Furthermore, the global and superlinear convergence of the shamanskii modification of the newton method with the new line search are proved under the weaker conditions than those in ref [ 10 ] ( i. e.,

    在本章中,我什1將邪a ? nans汕6修正牛頓法的迭代形式作了進一步的改進,改進后的sha 。 a 。
  17. The joint line convergence angle ( jlca ) was measured in degrees as the angle between the distal femoral and proximal tibial articular surfaces for both imaging techniques

    膝關節關節面連線夾角( jlca ) :膝關節股骨內外髁關節面與脛骨關節面的夾角。
  18. At any point the convergence is the angle between the meridian as represented on the plane and the n grid line

    一點上的收斂角是子午線在平面上的投影與n坐標線之間的角度。
  19. Convergence properties of the conjugate descent method with armijo - type line searches

    型線搜索下共軛下降法的收斂性
  20. The global convergence of the non - quasi - newton methods with non - monotone line search

    基於非單調線搜索非擬牛頓法的全局收斂性
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