波的變形 的英文怎麼說
中文拼音 [bōdebiànxíng]
波的變形
英文
deformation of wave-
For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此,對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此,本文從測井地質的角度,針對當前裂縫性儲層測井地質解釋與評價的現狀,在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上,利用分形分維方法和技術,通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ ( fa )與m指數的理論推導,根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜,則其分維值d _ ( fa )越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵,提出了改進的基於盒維數的測井曲線網格覆蓋法,編程計算了裂縫性儲層段常規測井曲線(如聲波和電阻率曲線)上分形分維值及其m指數值,進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究,效果十分理想: 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪,採用儲層分維值分類技術統計分析這些參數變化的規律,並結合qx油田l區塊儲層類型經驗判別圖版,從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。So the deformation modular of soil between piles, that is the rayleigh wave velocity of soil between piles is the capitally influence the sampling of n
因此,樁間土的變形模量,即樁間土的瑞雷波速成為影響n取值的主要因素。Firstly, the hertz contact theory is used to design the export moment of the prototype ; deformation status of the flexspine under the elliptical cam wave generator action is analyzed using the column shell theory, whose boundary condition is four force action. design proposal of the wave producer put forward considering the precision theory of rolling friction transmission
首先用赫茲接觸理論對樣機的輸出力矩進行了設計;應用四力作用下的光滑圓柱殼體理論分析了在橢圓凸輪波發生器作用下柔輪的變形狀況,結合滾動摩擦副傳動精度理論提出了波發生器總體設計方案。Finally a set of equations with initiate values for boundary value problem is established where the velocity potential and its normal derivative are unknowns. because the model includes the effects of both the time and space to the velocity potential of free surface, it can be applied to strong nonlinear wave. as examples, solitary wave is computed in the numerical flume
推導給出計算域內以所有節點波勢函數和波面位置高度的時間增量為未知量的線性方程組,並同時考慮時間因素和空間變位對波面勢函數的影響,在預設的計算精度下,通過時步內的循環迭代逐一確定每個時步上的波面運動位置,從而建立了一種可適于求解強非線性波浪變形計算的數值模式。It was concluded that the first sixteen harmonics of the fourier descriptor were enough to represent the primary shape of pear, and the shape identification accuracy could reach 90 % by applying the fourier descriptor in combination with artificial neural network
研究發現該傅立葉描述子的前16個諧波的變化特性足以代表梨體的主要形狀,採用傅立葉描述子與人工神經網路相結合的方法進行果形識別的精確率可達90 % 。The end face harmonic gear drive of oscillating teeth contains the advantages of the common harmonic gear drive and the oscillating teeth drive, and it belongs to the three dimensional space oscillating teeth gear drive. the new kind of transmission theory introduced in this article has been applied for patent ( the application number is 200410012992. 6 ) some fundamental theory of the end face harmonic gear drive of oscillating teeth is investigated in this paper, which can benefit the design of the product and the popularization of the patent
這種新型的傳動裝置屬于空間的活齒傳動機構,可以從根本上克服傳統的徑向諧波齒輪傳動中柔輪的變形與其承載能力之間的矛盾,並可增加同時嚙合的齒數,加大齒輪的模數,從而可以在保留徑向諧波齒輪傳動所有優點的基礎上,使其所傳遞的功率增加數十倍。Wavelet denoising in deformation data based on translation invariance
基於平移不變的變形監測數據小波變換去噪處理A nonlinear numerical model for wave transformation is established in time domain based on integral equation transformed from two dimensional laplace equation. then the model is applied to compute the linear wave and nonlinear wave deformation in offshore flow field. a new 0 - 1 combined bem ( boundary element method ) is adopted in this thesis to avoid computational errors accumulated with time steps
本文以波動勢函數的laplace方程的green積分轉換得到的邊界積分方程為基本控制方程,建立了一種新的時域內波浪變形計算的數值模型,籍此對非線性波浪在結構物周圍的波浪形態進行了數值模擬,並通過數值造波水槽內的波浪試驗對數值模擬結果進行檢驗。The bat mother and its child were compared concerning their morphology and echolocating calls, and the change in morphology and echolocating calls, which happened as the young bat grew were discussed. the communicating behavior between the mother and the young was described and thus the calls played an important role in the communication between the mother and the young
對雲南菊頭蝠的母幼蝠進行形態和聲波上的比較研究,探討隨著雲南菊頭蝠生長發育其形態和回聲定位聲波的變化,描述母幼的交流行為,確定其母幼交流的方式主要為聲音。Abstract : a numerical model for wave propagation in water of varying topography and current is proposed, and time - dependent wave mild - slope equation with a dissipation term and corresponding equivalent governing equations are presented. two different expressions of parabolic approximations for the case of the absence of current are also given and analyzed. examples of numerical simulation for wave transformation in large estuarine water areas are provided
文摘:提出了水深與流場緩變水域波浪傳播數學模型水流中依賴時間變量並考慮能耗的波浪「緩坡方程」及其等價的控制方程組,分析比較了無水流情況此理論模型與其相應的兩種拋物型近似的差別,提供了長江口波浪變形數值模擬計算工程實例.實例表明,該模型能適應河口三角洲大范圍水域波浪傳播數值計算Inspection and preventation control of plate undee distortion after welding
板材焊后波浪變形的檢驗及預防控制As surface waves propagate from deep to shallow water, the wave will take series of transformation including shoaling, refraction, diffraction, reflection, breaking and energy dissipation due to the effect of topography and various hydraulic structures
波浪由深海向海岸傳播過程中,由於地形和水工建築物等因素的影響,將發生淺水變形、折射、繞射、反射、破碎以及能量耗散等波浪變形現象。The numerical model is tested by computing wave field for several examples of laboratory experiment, and agreement between model results and available experimental data is found to be quite reasonable, which demonstrates the model ' s ability to simulate wave shoaling, refraction, diffraction and reflection
用多個實驗地形對本文模型進行了驗證,計算結果與實測數據吻合很好,反映了本文模型可以較好地模擬波浪傳播過程中的淺水變形、折射、繞射和反射等波浪變形現象。Generally, the gravity introduced deformation of an optical lens with smaller aperture ( < ( 100mm ) within visible band is about ( / 20 even less than this value. for general optical lens, this error level can be entirely neglected. but for the high - accuracy optical system within extreme ultraviolet band, the error caused by gravity deformation will lead to imaging quality degradation
本文較為系統地介紹了光學鏡頭的裝配與調校方法,一般地講,在可見波段內,光學鏡片口徑較小( < 100mm )時,重力引起的變形一般/ 20左右甚至更小,對於一般的光學鏡頭這樣量級的誤差完全可以忽略,但在極紫外短波長的高精度光學系統中重力變形帶來的誤差會使光學系統成像質量下降。( 4 ) after factual characteristics of targets and clutter have been studied, an approach of radar signal detection based on factual has been given and analyzed deeply, the influence caused by different window length, signal to clutter ratio ( scr ) and clutter background has been analyzed, then the monte - carlo simulation method has been used to analyze the detection performances
( 4 )研究了目標和雜波的分形特性,深入研究了基於分形的雷達信號檢測方法,分析了不同滑窗長度、不同信雜比和雜波背景變化情況對回波分形維數的影響,採用蒙特卡羅模擬分析該檢測器的性能。The mechanism for vibration for trains " running is the mutual effects between wheels and the track system. the mutual effects cause tracks and grounds to be deformed, and engender crooked waves in the tracks. the deforming effects of grounds lead to vibration which spreads outwardly through soil layers
列車運行時產生振動的機理是車輪與軌道系統的相互作用,這一作用引起軌道及地基的變形並在軌道內產生彎曲波,由於地基的變形所引起的波動通過土層向外傳播。Research on deformation analysis based on wavelet transformation
基於小波變換的變形監測分析研究When waves propagate over the ocean surface, a sequence of wave pressure is induced on the mudline or seafloor, which causes the coupling interaction between the deformation of soil skeleton and seepage movements of porous fluid
海洋表面傳播的波浪在海水-海床的交界面處施加了循環波壓力,在這種循環波壓力作用下,海床內土骨架的變形與孔隙流體的滲流運動相互耦合。The deformation analysis was made to a 12 storey reinforcement concrete structure, building in site condition ii, earthquake fortification level 8, by a program idarc - 2d which is put forward by the state university of new york at buffalo. the strong ground motion records obtained from pacific earthquake engineering research ( peer ) stiong ground motion database. thirty - eight waves were selected from the database by sorting the site condition and peak ground acceleration a comparison was made to the thirty - eight records " response spectra and the design response spectrum. thirteen waves were selected to the deformation analysis, el - centro wave and taft wave were added as a comparison. the result of computation shows that the selected waves damaged the structure severely than the el - centro wave and taft wave
利用idarc - 2d對一建於8度類場地上的12層鋼筋混凝土框架結構進行了大震下的變形驗算。強震記錄取自加州國家地震中心強震數據庫,按場地類別和峰值加速度對數據進行分類處理,從中選出38條波進行反應譜的擬合。最終選定擬合較好的13條波進行本次試算,作為比較加入了常用的el - centro波和taft波。The dft ( discrete fourier transform ) method is use to demodulate the gap length of the low finesse fabry - perot sensor. 3. the accuracy of the results of dft algorithm is analyzed
針對實際光強信號在波長域均勻采樣,而在頻率域非均勻采樣的特點,討論了傅立葉變換的變形? ?離散腔長變換( dgt )演算法。分享友人