時域局部化 的英文怎麼說

中文拼音 [shíyùjúbùhuà]
時域局部化 英文
time localization
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 域 : 名詞（在一定疆界內的地方; 疆域） land within certain boundaries; territory; region
  • 局 : Ⅰ名詞1 （棋盤） chessboard2 （下棋或其他比賽一次叫一局） game; set; innings 3 （形勢; 情況; 處境...
  • 部 : Ⅰ名詞1 （部分; 部位） part; section; division; region 2 （部門; 機關或組織單位的名稱） unit; mini...
  1. Secondly, based on the microbeam analytical technique, on the one hand, through investigating the characteristic of major elements in the mantle minerals the author acquired the static information from mantle ; on the other hand, through multi - point analysis of a part of the minerals from mantle, the auther got dynamic information from mantle. finally, generalizating the fruits of this study and predecessors, the autor holds that the constituents of lithospheric mantle possibly includes spinel lherzolites, clinopyroxenites, websterite, dunite, harzburgites, garnet lherzite, phlogopite lherzite, eclogites, clinopyroxene megacrysts ; compared with east china and north china platform, the research field mantle shows the characteristics of higher degree of partial melting processes and more depleted mantle ; the. upper mantle beneath north hetian area is heterogeneous, with a tendency of deficit in a12o3 and lree from kaliyang in west hetian to the river basin of kalakshi river and yulongkashi river ; the subduction of the crust beneath north hetian has ever occurred in geological history and caused the mixing of mantle - crust ; the depth of the origination of basaltic magmas beneath north hetian exceeds 73km ; the thickness of the lithosphere beneath the research area amounts to 204. 9km ; the mantle beneath north hetian has geological condtions for forming diamond deposits

    最後，綜合本區幔源礦物和地幔巖石的特徵以及地球物理資料，得出如下結論：本區上地幔的物質組成有尖晶石二輝橄欖巖、二輝巖、單斜輝石巖、純橄欖巖、方輝橄欖巖、石榴石二輝橄欖巖、金雲母二輝橄欖巖、榴輝巖；與中國東部以及華北地臺上地幔相比，研究區上地幔具有富集主元素中相容元素和虧損其中的不相容元素的特徵，局部熔融程度較高；上地幔存在橫向和縱向的不均一性，從西部的克里陽到喀拉喀什河和玉龍喀什河流域， al和lree富集程度呈下降趨勢，不同來源的相同礦物中主元素的含量差異較大；地質歷史時期這里可能發生過地殼俯沖並產生殼幔混合作用；玄武巖漿的起源深度73km ；從幔源重砂礦物的溫壓估算結果，可以推斷出巖石圈厚度可達204 . 9km ；綜合巖石圈物質組成特徵、巖石圈熱狀態、地幔溫壓狀態、氧逸度以及幔源巖石和幔源礦物的化學成分，認為研究區具備了金剛石成礦地幔地質條件。
  2. In the first part of the paper, the development of motor control system fault diagnosis theory is summarized. on the basis of the analysis of the characteristics of wavelet, the theory is discussed and the definition of the singularity is given. because of the localization property of wavelet transform, wavelet analysis can be used to detect the characteristics of the singularity from the signal and intermittence fault problems lying in the motor under test

    著重介紹了小波分析在電機控制系統故障診斷中的應用，根據小波理論在時域和頻域良好的局部化性質，討論了利用小波變換來檢測信號的奇異特徵的原理，給出了小波變換對信號奇異性特徵檢測的方法，針對實際應用，對小波基函數選取及小波分解尺度進行了探討。
  3. The welding technology of francis turbine runners is optimized from the view of subsection welding and local heating by numerical simulation. the result shows that welding residual tensile stress appears in the weld and its area nearby, and peak stress appears in the dangerous area of blades after practising quondam welding technology ; welding residual tensile peak stress in the dangerous area of blades can be decreased by welding both ends earlier and then welding middle section later during subsection welding, and decreasing effect on welding residual stress of the subsection welding is related to the weld length of blade outlets and welding direction of each subsection ; decreasing effect on residual stress of the local heating is direct proportional to heating time, heating temperature, heating area, and inversely proportional to cooling area, and welding residual tensile peak stress in the dangerous area is decreasing trend earlier, and then increasing trend later with heated location increased

    本文利用數值模擬手段對轉輪的焊接工藝從分段焊和局部加熱兩個方面進行了優化，結果表明:採用普通工藝焊接時，葉片焊后殘余拉應力出現在焊縫及其附近區域，並且在葉片出水邊的熔合線附近（危險區域）出現了峰值;在採用優化的分段焊時，先焊兩端后焊中間的方法可以降低葉片危險區域的焊接殘余拉應力峰值，降低效果與葉片出水邊焊段長度、焊縫各段的焊接方向有關;局部加熱法降低轉輪危險區域殘余應力的效果主要與加熱時間、加熱溫度以及加熱面積成正比，與冷卻面積成反比，並且危險區域的殘余應力隨加熱區域的增大呈先降低后升高的趨勢。
  4. Wavelet transform, which has a multi - resolution analytic character, is a time - scale ( time - frequency ) analytic method of information. moreover, as both of its time - window and frequency - window can be changed it processes the ability of expressing local characters of information in time - frequency domain

    小波變換是一種信號的時間尺度（時間頻率）分析方法，它具有多解析度分析的特點，而且在時頻兩域都具有表徵信號局部特徵的能力，是一種窗口大小固定不變但其形狀可改變，時間窗和頻率窗都可以改變的時頻局部化分析方法。
  5. In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source

    摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。
  6. Lacking of space locality in time domain, fourier analysis can only make certain of the integral singularity of a function or signal. as a result ; it is difficult to detect the spatial position and distribution of broken signal by fourier analysis. wavelet analysis has the characteristic of spatial locality, and its wideness in both windows of the time and the frequency can be adjusted, so it can analyze the details of a signal

    小波分析優于傅里葉之處在於，小波分析在時域和頻域同時具有良好的局部化性質，因為小波函數是緊支集，而三角正、餘弦的區間是無窮區間，所以小波變換可以對高頻成分採用逐漸精細的時域或空間域取代步長，從而可以聚焦到對象的任意細節。
  7. By using the projective covering method and projective covering probability, fractal and multifractal dimensions of different types of landform sueface above are computed. results show that all the studied landform surface are not simple fractals, but multi - range scaling fractals, and the fractal dimensions increase with the landform type from basin to mid - low mountain and high mountain. nevertheless, different type landscapes perform different dq - q curve shapes. which the dq value has the widest range in the high mountain type, the second one is the mid - low mountain type, and then the basin type

    對不同時段地震形變場圖象多重分形特徵的研究表明，震源區及近震源區強震前垂直形變圖象都出現信息維降低，多重分形譜曲線dq變陡，值域范圍變寬的特徵，說明在強震前地殼垂直形變出現了局部化、不均勻性增強的行為，這些對地震預報都有重要的實際意義。
  8. As a new type of time - frequency analysis media, it excels in its good localization character both in time domain and in frequency domain comparing with traditional fourier analysis. it changes its sampling steps to smaller and smaller so as to analyze high frequency part, focusing on any part of the object been analyzed. to some extent, wavelet analysis is called " math microscope "

    作為一種新型的時頻分析方法，它優于傳統fourier變換的優點是在時域和頻域同時具有良好的局部化性質，可對高頻成分採用逐步精細的時域采樣步長，聚焦到對象的任意細節，因此被譽為「數學顯微鏡」 。
  9. Wavelet has good localizing quality at time domain and frequency domain simultaneously and the characteristic of multi - resolution ratio analysis, so it can fulfill all kinds of wave - filtering needs such as low - pass, high - pass, sink wave, random noise denoising. compare with readitional wave - filtering methods, wavelet has incomparable advantage. wavelet has become an effective means of signal analysis and is intituled as math microscope of signal analysis

    小波分析由於在時域頻域同時具有良好的局部化性質和多解析度分析的特點，因此不僅能滿足各種去噪要求如低通、高通、陷波、隨機噪音的去除等，而且與傳統的去噪方法相比較，有著無可比擬的優點，成為信號分析的一個強有力的工具，被譽為分析信號的數學顯微鏡。
  10. Wavelet transform, which is a new powerful mathematical tool appeared in recent years, is regarded as the crystal work of pure mathematical field and the great breakthrough in signal - picture analysis and quantum physics, and is thought as the new trend of applied mathematics. because of its good time - frequency localization and flexible time - frequency windows, wavelet transform has been widely applied in such as signal study, picture process, quantum mechanics, radar, computer identification, earthquake exploration, so on and so forth

    小波分析是近年來出現的嶄新而有力的數學工具，由於其良好的局部化特性和彈性的時-頻窗特點，而被認為是調和分析這以純數學重要領域半個世紀以來工作之結晶，也是信號與圖像分析、量子物理等科學和工程技術近十年來在數學方法上的重大突破，從而被認為是應用數學的新趨勢。
  11. Wavelet analysis is a brand new mathematical tool which has good resolutions at both time and frequency domain

    小波分析是新的信號分析數學工具，它在時域和頻域同時具有良好的局部化特性。
  12. Wavelet transforms overcome the shortcomings of fourier - based techniques because of wavelet ’ s advantage on flexible time - frequency windows. wavelet has been widely applied in numerical analysis, signal processing, and image processing. at present, lifting scheme is new method for constructing wavelets and performing wavelet transform

    小波變換克服了傳統fourier變換的不足，在時域和頻域都有良好的局部化特性，在數值分析，信號處理，圖像處理方面得到廣泛的應用，提升技術是構造小波和實現小波變換的一種新方法。
  13. Wavelet transform, which developed in late 1980 ' s, is a new kind of time frequency analytic method. it has good localization characteristic in both time and frequency domain ; and has been applied for signal de - noising fields

    小波變換是八十年代末發展起來的一種新的時頻分析方法，它在時、頻兩域都具有良好的局部化特性；並且在信號去噪領域獲得了廣泛的應用。
  14. Wavelet analysis is a newly developed theory, which overcomes the disadvantages of traditional fourier analysis. it has good localized features in both the time domain and the frequency domain and has important application value in the fields of signal processing, image processing, speech analysis and so on

    小波分析是一門新興理論，它克服了傳統fourier分析的不足，在時域和頻域都具有良好的局部化特性，在信號處理、圖像處理、語音分析等領域有重要的應用價值。
  15. The wavelet analysis is applying widely to pure mathematics, applied mathematics, signal processing, speech recognition and synthesis, automation processing and image analysis etc. the key advantage of the wavelet analysis is that, in contrast to the conventional fourier analysis, it can be localized in the time and frequency domain simultaneously

    小波分析已經廣泛應用於理論數學、應用數學、信號處理、語音識別與合成、自動控制和圖像處理與分析等領域。同傳統的傅立葉分析相比，小波分析的最大優勢在於可以同時在時頻兩方面實現局部化分析。
  16. Wavelet theory began from 1980 ' s and developed greatly in 1990 ' s. wavelet theory provides a new powerful tool for studies relying on the time - frequency signal analysis. the main advantage of wavelet transform remains in its ability to locally describe signal frequency content

    它是傳統傅立葉變換的新發展，它較付氏分析的主要優點在於可同時在時域和頻域局部化，被看作是一種新的時頻分析工具。
  17. As a new type of analytical tool, wavelet transform has good localized performance on both time field and frequency field

    小波分析作為一種新型分析工具，在時域和頻域同時具有良好的局部化性質，比傅立葉分析更為精確可靠。
  18. In video image compression / decompression, the wavelet transform has character of multi - scale, multi - resolution analysis and time - domain localize, can be applied into video monitoring system

    而在視頻信號的編碼與解碼時，小波變換具有多尺度、多解析度分析和時域局部化等優點，非常適合應用於實時視頻監視系統。
  19. Magnetizing inrush current has obvious singularity, and wavelet transform has multi - scale and good time - frequency local characteristic, that it is particularly well adapted to extract the characteristic of signal ' s edge and peak value, and can check up the singularity well

    變壓器勵磁涌流具有明顯的奇異性，小波變換具有多尺度分析和良好時頻域局部化特性，適合提取信號邊緣和峰值突變的特徵，能夠很好的檢測信號奇異性。
  20. Edge detection and contour tracking are very important in computer vision. because the single pixel edges are needed in computer vision, an algorithm of edge detection and contour tracking is proposed using the good local character and multi - scale character of wavelet transform in the dissertation. the fuzzy algorithm is applied to pick the model maximum points, so that the single pixel edge can be obtained

    邊緣檢測和輪廓跟蹤在計算機視覺中有著重要的地位，利用小波變換良好的時頻域局部化特性和多尺度特性，針對計算機視覺中需要提取單像素的點線等邊緣的需求，本文提出了一種基於小波變換的邊緣檢測和輪廓跟蹤演算法，通過真正的邊緣點是模的局部極值點這一特點，應用模糊演算法對模極大值點進一步篩選得到單像素級的邊緣，並在邊緣跟蹤時，有效利用原圖像的信息，通過在小鄰域內尋找局部峰值對丟失弱邊緣進行了補償。
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