線反演 的英文怎麼說

中文拼音 [xiànfǎnyǎn]
線反演 英文
line inversion
  • 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...
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  1. Based on 2m contour of surveyed bathymetry from 1976 to 1999 and mean - high - tidal line distracted from remote sensing images acquired by landsat - 5 tm from 1976 to 2000 respectively, quantitative analysis about alluvion and erosion as well as the relationship between accretion of modern yellow river delta and the water and sediment discharge of yellow river is made, and the results indicate the mean - high - tidal level is more effective than 2m contour of the bathymetry. it is found that the accretion of modem yellow river delta is becoming less and less, what ' s more, erosion is even more than alluvion in some recent years. diaokou promontory has been eroded seriously since yellow river changed its course in1976

    以一般高潮線反映現代黃河三角洲沖淤演變時，從1976年黃河改道清水溝流路入海到2000年，整個黃洞三角洲凈造陸201 . 5km ~ 2 ，淤積有逐漸變慢的趨勢，甚至出現凈蝕退的年份；刁口河嘴大量蝕退，蝕退速率開始快速，后來逐漸變慢；清水溝河嘴大量淤積，淤積速率開始迅速，后來逐漸變慢，甚至出現凈蝕退；清水溝河嘴南側到支脈溝一段岸線與刁口河嘴以西到灣灣溝一段岸線基本穩定。
  2. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  3. We have not some certain appropriable method to solve this problem. more less job has been done on the loess nonlinear model

    本論文用正演和優化相結合的方式對黃土的非線性本構模型中的參數進行反演。
  4. Besides that ray theory is helpful to calculate three - dimensional sound field, and the inversion of sound field could be finished quickly enough to realize the detection of ocean environment in wide area

    特別是射線理論對解三維聲場尤為方便，它將有望實現三維聲場的快速計算和聲場的反演，達到海詳環境的監測目的。
  5. The inversion results of synthetic magnetotelluric sounding data are ideal, which indicates that the algorithm possesses advantages of expediting convergence, avoiding earliness and improving precision, and can be used in mt data analysis

    對各種類型的大地電磁測深理論曲線進行計算，結果表明：採用實數編碼混合遺傳演算法進行反演具有收斂速度快、解的精度高和避免出現早熟等優點，可用於大地電磁資料解釋。
  6. The results reveal that calculation errors can be reduced with the linear expending nodes, which can be found out by anti - inference method, decided on the limiting equilibration surface based on the advance losm method

    結果顯示，用改進一次二階矩法將線性展開點（可用反演算法求得）選在極限平衡狀態面上，可減小計算誤差。
  7. A transformation that is most useful in the application of the hodograph method is the inversion transformation.

    在速端曲線法的應用中，一種最有用的變換是反演變換。
  8. Considering the nonuniqueness and instability of ultrasonic computerized tomography for structural concrete as well as the ultrasonic transmission characteristics in concrete, a natural weight matrix with dear physical meaning was introduced in the inverse algorithm

    摘要針對混凝土超聲波層析成像結果不唯一和穩定性差的問題，首先依據超聲波在混凝土中的傳播特點，在反演演算法中引入物理意義明確的自然權矩陣，對走時較小的射線和射線較密的成像單元加以重權。
  9. Based on the back - analysis data of some excavation stage, through the non - linear finite element program nef, we can predict the tendency of next excavation stage. the relative error between calculation and measurement is controlled in 25 %, demonstrate the estimate prediction is successful

    根據反演的某一階段的土體參數值，通過非線性有限元程序nfp ，預測后一階段的邊坡變形情況，實例中理論計算值與實測值的相對誤差控制在25 %以內，說明預測是成功的。
  10. As a result of interference of light, the spectrum distribution of light will change in some condition when it pass through some medium, and the change is determined by the parameter of the medium

    利用光譜儀測量干涉后的光譜分佈，再結合優化演算法擬合測量光譜曲線，反演出光學介質的某些未知物理參數。
  11. The method of the model retrieval breaks down the traditional population density statistics method according to the administrative area boundary and changes to evenly distributed and same size grid units to compute the population density. it enriches the methods to obtain the population density indexes and increases the accurate degree and application fields of the indexes. so, it will benefit to the decision process of the population and economic policy, benefit to the sustainable development of regions

    這種模型反演的方法，突破了傳統的按行政區界線統計人口密度的方法，改為按照均勻分佈、規則大小的格點單元來計算人口密度，豐富了獲取人口密度指標的方法，提高了人口密度指標的精確程度和應用范圍，將有利於人口、經濟政策的決策過程，有利於區域可持續發展。
  12. The results are as follows : based on the nonlinear least square optimization technique and singular value decomposition method, the back - analysis method for estimating material properties is established

    以非線性最小二乘的優化原理為基礎，並結合奇異值分解，開發了基於非線性最小二乘的路面模量反演演算法。
  13. In the last forty years the research for finding solitary wave solutions has been experienced a great growth and some sucessful methods including the inverse scattering theory, backland transform, hirota ' s bilinear methods and the homogeneous balance method have been presented in succession

    近四十年來非線性演化方程孤波解的解法研究蓬勃發展，相繼誕生了一些比較成功的求解方法，如反散射方法、 b （ ? ） ckland變換方法、 hirota方法以及齊次平衡方法等，這些方法多年來得到了廣泛的發展和應用。
  14. Several numerical experiments are carried out to detect the actual steps and limitation for the velocity and depth parameter ' s ray inversion in the fourth chapter, and the we find that : a. the resolution capability of the layer ' s velocity change along both the top and bottom boundary is very poor. thus generally the vertical homogeneous layer model whose top velocity equal to that of its bottom boundary should be considered

    本文的第四章通過一系列模型試驗詳細探討了利用射線反演方法反演速度和深度參數的實際步驟，認為走時反演對速度層內頂部和底部速度變化的分辨能力很弱，僅僅依靠走時數據難以反演出層內頂部和底部的速度變化，故一般情況下應採用速度層底部和頂部速度相同的縱向均勻模型。
  15. 2, the image of sn - wave velocity lateral variation is reconstructed in china continent by tomography method using 43646 sn rays

    2 、用了43646條sn射線反演得到中國大陸上地幔頂部s波速度橫向變化。
  16. Rayleigh wave method is a jumped - up and effective in - situ test. we can inverts the velocity structure of the strata through the quantitive interpretation of dispersion curve of rayleigh wave with this method, then distinguish and determine the physico - mechanical properties of the strata by the wave velocity in order to solve the geotechnical problems

    瑞利波法是近年米新興的、行之有效的原位測試方法，該法通過定量解釋實測瑞利波頻散曲線，反演地層速度結構，利用波速區分和確定地層物理力學特性，以解決巖土工程問題。
  17. Based on the analyzing of the dss ' s basic theory of tomography, an inversion scheme that can be described as the combination of the finite - difference inversion and ray inversion using traveltime, amplitude and gravity data is proposed

    在分析深地震測深剖面層析成像基本理論的基礎上提出了利用走時、振幅和重力數據，通過有限差分反演和射線反演方法對地殼上地幔結構進行層析成像的研究思路。
  18. It shows that the resolution of the crust interface ' s shape on this four profiles is very good, nevertheless that of the velocity structure is relatively poor. the crust and upper mantle ' s fine configuration on the hq - 13 profile is obtained by our tomography, which reveals some important structure and dynamic features of this region : the velocity structure of the crust consists of three layers, the upper crust, the middle crust and the lower crust. however it also can be divided into six lateral blocks, each of them " s velocity is always higher or lower than that of its neighboring blocks

    本文第五章利用有限差分反演和射線反演的方法獲得了符離集?奉賢地震測深剖面（ hq - 13線）精細的地殼上地幔結構剖面，揭示出下揚子地區一些重要的結構和動力學特徵：地殼速度結構在縱向上大致可分上地殼、中地殼和下地殼三部分，橫向上可劃分為6個塊體，各塊體的p波速度沿測線方向呈現高速?低速?高速的組合。
  19. In the inversion of well - log and the extraction of features, the walsh function and sequence analysis is introduced, which raises the vertical resolution, protrudes the limit of layers and extracts more effective features

    沃爾什函數及序譜分析被用到了測井曲線反演與特徵提取上，結合測井曲線的短期平穩性，提高了測井曲線的縱向解析度，突出了薄層和層段界限，並提取了有效的序譜特徵。
  20. Firstly, well logging responses of fractured reservoir have been worked out by using rock core to calibrate well logging data. secondly, with the help of the seismic coherence cube, 3d volume visualization, seismic multi - attribute parameter, the curves of geophysical characteristics restructed, seismic data inversion with well logging restrict, the well curves inversion and so on, much work has been done, such as the full 3d seismic data fine structure interpretation and the studies for predicting the fractured reservoir in buried hills. a technique has been invented to predicting the fractured reservoir of metamorphic rock in buried hills with the integration of the multi - attribute and the multi - parameters

    利用巖芯標定測井資料，研究了裂縫性儲層的測井響應，進而藉助于地震相干體技術、三維可視化、地震多屬性參數、地球物理特徵曲線重構、測井約束地震反演和測井特徵曲線反演等多項技術開展了全三維地震構造精細解釋和潛山裂縫性儲層橫向預測研究，形成了多屬性、多參數綜合預測變質巖裂縫性儲層的方法。
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