水平波數 的英文怎麼說

中文拼音 [shuǐpíngbōshǔ]
水平波數 英文
horizontal wave number
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 平 : Ⅰ形容詞1 （沒有高低凹凸 不頃斜） flat; level; even; smooth 2 （高度相同; 不相上下） on the same l...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 水平 : 1. （跟水面平行的） horizontal;level2. （達到的高度） standard; level
  1. In designing analogic circuit, we adopt programmable filter max262 to meet the system ' s command. after the step, we can make the signal ' s frequency width is wider and noise level is lower. to make the signal ' s amplitude to meet the analogic to digital device ' s command, we adopt the max551 to finish the gain control

    在模擬電路部分，採用可編程濾波器max262 ，這樣就滿足了該數據採集裝置所採集的信號的頻率范圍較寬以及具有較低的噪聲水平的要求，為了使采樣到的信號的幅度滿足後面a d轉換器的要求，採用max551對采樣到的信號進行調理（增益控制） 。
  2. Based on the research of the characteristics of piezoelectric ceramic, this paper presents the analysis of the movement of the stator surface points and work principle of motor. this paper describes a theory about the influence of the ultrasonic vibration on the frictional properties of ultrosonic dring, and finds that the horizontal vibration produces friction driving force and vertical vibration affects horizontal driving effect

    並且對行波型超聲波電動機的減摩現象進行了研究，發現在接觸區定子表面上一點的水平振動產生摩擦驅動力，垂直振動只起影響水平驅動效果的作用，得出垂直方向超聲振動具有減振作用是引起超聲驅動動摩擦系數降低的原因。
  3. The types of the detection equipments and apparatus are over 100, such as x - ray detector, r - ray detector, digital ultrasonic flaw detector, eddy current flaw detector, eddy current flaw detector, magnetic memory metal diagnostic instrument, acoustic emission testing an analyzing system, three - dimensional ultrasonic testing system, microcomuterhydraulic pressureniversal testing machine, metalloscope, portable direct - read spectrograph, have achieved the national advanced technology

    擁有各種檢測設備100多套，如射線探傷機、數字式超聲波探傷儀、渦流探傷儀、磁記憶金屬診斷儀、聲發射檢測及分析系統、三維超聲波檢測系統、便攜式直讀光譜儀、微機式液壓萬能試驗機、金相顯微鏡等，達到國內先進水平。
  4. Under the assumption of linear ocean waves, and in the light of the theoretical framework about the probabilistic distribution of wave characteristics ( sun fu 1988 ), several probabilistic distributions of wave characteristics that is necessary for the estimation of breaking probability and whitecap coverage are derived. afterwards, the models of breaking probability and whitecap coverage are set up with these distributions in addition to the kinematical criterion

    在線性海浪假設下，基於孫孚（ 1988 ）關於三維海浪要素統計分佈的理論框架，具體給出二維海浪波峰處質點水平速度和表觀相速的聯合分佈等分佈函數，在此基礎上，根據運動學判據，分別建立起風浪破碎率和白浪覆蓋率的理論模式。
  5. Finally, the method of estimating power customer emission level based on binary linear regression is put forward, which make it a condition that harmonic emission is steady at the point of common coupling. combined with power system thevenin equivalent and customer norton equivalent, according to the principle of least squares method, the voltage that a customer ' s harmonic current begets at the point of common coupling can be estimated in the light of the plural correlation of network parameters

    最後，提出了基於二元線性回歸的用戶諧波發射水平估計方法，該方法在假設公共聯接點諧波發射穩定的情況下，結合系統側戴維南等值與用戶側諾頓等值的電路圖，按照最小二乘法原理，利用電網各參數的復數關系推導關于系統側諧波阻抗的二元線性回歸方程，並根據諧波阻抗的估計值求取用戶諧波電流在公共聯四川大學碩士學位論文（ 2003 ）接點產生的電壓降。
  6. For a x - directed line current with lengh much smaller than a wave length, the e - field pattern on coordinate planes in 3 - d space in the region from much smaller than line length to one or two wave length, the synthesized pattern by summation of the field of many line segments of hertz dipoles is independent of the number of segments, i. e. same field as a single hertz dipole

    以水平面上三角形甚小於波長線電流為例，分割為若干小段之赫芝偶極所加總合成在三度空間任意座標平面上距離從甚大於線長到一兩個波長區域之電場場型與分割小段數量無關，即等同於一單一赫芝偶極之場型。
  7. Therefore, the power department and users are concerned aboui harmonic and reactive compensation. the power department usually manage compute and measure the electric net " s harmonic condition and connected or new - connected harmonic load. and need to measure the harmonic vol tage current in some electric net " point. then, by manual making an in - depth analysis and statistics on measured - data, it can reduce harmonic harm on public not to take some effective measures

    電力部門通常在實際中，需要對電網的諧波狀況、已接入和新接入系統的諧波源負荷進行管理、計算及測量，需要對電力網路各點的諧波電壓、電流實際水平進行測試，然後對測試數據進行人工分析統計，並以此採取相應措施降低或減少諧波對電網的危害。
  8. The experiment shows mbid can produce the enhanced pressure field at hydrophone array, provide modal domain representation of pressure ( modal functions and horizontal wavenumbers ) and target ' s bearing ( plane waves ), and have good adaptive ability and robustness against mismatch

    實驗數據和模擬數據的結合驗證了模基辨識器不僅能夠產生增強的水聽器陣處的聲壓場表示，而且能夠輸出模域表示（模深度函數和水平波數）和目標的方位（平面波模型） ，也具有較好的自適應性及對失配的寬容性。
  9. Inside the film, the field varies sinusoidally and the entire surface-wave mode propagates alone the horizontal z direction.

    在薄膜內，場按正弦函數變化，整個表面波模沿水平Z方向傳播。
  10. This thesis in combination with the actual engineering demand, analyzes and designs a horizontally polarized triangular - grid planar phased array antenna, which composed of open - ended rectangular waveguide, the main steps of analyzing and designing are as follows : 1. at first, taking no account of mutual coupling among the array elements, classical electromagnetic theory is used to establish analyzing model for finite array, and initial value parameters of the array structure which basic satisfy the design index are got, these parameters provide reference for subsequent analyzing and design

    本論文結合實際工程需要，分析和設計了一個採用水平極化方式的三角形柵格矩形波導相控陣天線，其主要步驟如下: 1 .首先，在不考慮陣列單元間互耦影響的情況下，採用經典電磁理論建立有限陣列分析模型，通過分析得到了基本滿足設計指標的陣列結構參數，為后續的分析、設計提供參考。
  11. 3. after the parameters of the array structure are got, simulation software, such as cst microwave studio, cts design studio and ansoft hfss, are used to design the power dividers for the radiation units in the horizontally polarized direction of the array. these power dividers adopt structure of coupling slots in the narrow side of main rectangular waveguides, in which the narrow side of the main waveguide and the broadside of secondary waveguides are crossed at locations of each slot

    3 .在得到滿足指標要求的陣列結構參數后，採用cstmicrowavestudio 、 ctsdesignstudio和ansofthfss等電磁模擬軟體對陣列在水平極化方向的行饋功分器進行模擬設計，該陣列的行饋功分器採用波導窄邊單縫耦合饋電結構。
  12. Abstract : the effects of airfoil geometric parameters on wing " s spacial and polarized scattering characteristics have been systematically revealed. the results of the study indicated that the calculating value of diffraction from trailing edge by using the formula of the straight wedge is very far from experimental results for vertical polarization, and the contribution of thickness of the trailing edge to scattering must be considered in the calculation. the scattering peak of leading edge depends only on radius of airfoil for horizontal polarization. but for vertical polarization, it depends on maximum thickness and the location of maximum thickness. engineering formulas for evaluating all scattering peaks were given in the paper. it is important for the design of low - rcs wing

    文摘:系統地揭示了翼形幾何參數對機翼的空間散射特性、極化散射特性的影響規律.研究發現，在垂直極化狀態下用理論尖劈公式計算機翼后緣繞射的計算結果與實驗結果相差甚遠.提出在垂直極化狀態下機翼后緣繞射的計算必須將后緣厚度考慮在內的見解.對於水平極化，前緣散射波峰只與前緣半徑有關；而對於垂直極化，前緣散射波峰與翼形最大厚度以及最大厚度位置有關.給出前後緣散射波峰的工程估算公式，為低雷達散射截面（ rcs ）機翼設計提供依據
  13. Based on the spectral irradiance measured with the sun - atmosphere ultraviolet spectrum radiometer ( sauvs ) developed by the institute of atmosphere physics and the changchun institute of optics and fine mechanics, chinese academy of sciences, measuring the direct and scatter irradiance spectrum of ultraviolet waveband which arrives in beijing global surface, giving a method of retrieving the aerosol optical depth ( aod ) and put up with primary results that exponential function can fit the retrieval results according to its visibility, putting forth different coefficients and functions on variable visibility, also giving a primary analysis on the aod in dust - storm day and some contrast between sun - day and dust - storm day, analyzing the ratio between scatter and total irradiance, and its relationship with atmosphere mass and total atmosphere optical depth, lastly contrasting with the survey results by aeronet beijing station, the results of retrieval is in reason, this work gives some help in researching the co - effect of aerosol - radiance - climate and makes preparation for further survey on the radiance characteristics of dust

    利用中國科學院大氣物理研究所與長春光學精密機械研究所合作研製的太陽?大氣紫外光譜輻射計（ sauvs ） ，測量到達北京地表的太陽直接和散射紫外光譜輻射，導出了大氣氣溶膠的光學厚度。初步結果表明：北京紫外波段大氣氣溶膠的光學厚度在絕大部分情況下隨波長的增加而單調減小，用指數函數可以較好地擬合反演結果，統計得到了三個水平能見度狀況下擬合函數的系數值和公式表達式；初步分析了揚沙、浮塵、沙塵暴天氣條件下氣溶膠光學厚度的特點，並與一般晴朗天氣條件下的氣溶膠光學厚度特點做了比較分析；分析了太陽紫外譜輻射中散射輻射與大氣質量、大氣總光學厚度的定性關系和定量表達式；最後與全球氣溶膠監測網路（ aeronet ）北京站的資料做比對，表明反演結果基本合理。
  14. I use the moving averages as described earlier as well as fibonacci levels and then most definitely trendlines and price levels

    我應用均線、斐波納契數列線和明顯的趨勢線和價格水平線。
  15. Three finite - difference methods, i. e., stagger grid, implicit and explicit algorithms, are analyzed in detail. multi - grid algorithm is firstly introduced in elastic wave simulation, to solve for the stability problem inherent in stagger grid and implicit algorithm, also for the efficiency problem inherent in explicit algorithm, and the precision, stability and efficiency for simulation of elastic wave arc increased by multi - grid method. phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation, based on phase delay and amplitude decaying features along wave propagation

    在水平分層介質接收函數的波形反演研究的基礎上，本文系統闡述了非均勻介質中彈性波傳播數值模擬常用的三種有限差分方法：顯式差分、隱式差分和交錯網格法，首次將多重網格演算法應用於彈性波方程的數值模擬問題，克服了交錯網格法和顯式差分法穩定性差，以及隱式差分法計算效率低的缺點，大大提高了彈性波數值模擬的精度、穩定性和計算效率。
  16. For both newtonian flow and non - newtonian flow, the vortices are generated when the waviness of the bottom profile is beyond a critical number. by increasing the waviness, a second vortex can be generated. with the increasing of reynolds number, the symmetry of the streamlines at re = 0 is destroyed and the vortices are sloped and become larger

    當波形板的波動度超出臨界值，波形板壁面上的流動出現流線分離，流動中有渦生成;增大波動度，流動中出現第二個渦; re = 0 ，流線在流場中對稱分佈;雷諾數增大，流線駐點在水平方向出現位置偏移，渦的范圍增大;對于非牛頓流體，隨著剪切變稀指數的減小，渦的作用范圍減小。
  17. In this paper, based on summarizing previous numerical studies on wave transformations, several works are documented : based on the mass conservation equation and euler ' s equation, the extended form of boussinesq equations is derived by using the velocity at an arbitrary water depth as the independent variable, and several terms are added into governing equations to model the effects of bottom friction, wave breaking and subgrid turbulent mixing

    本文在總結概述前人關于boussinesq方程波浪數學模型研究進展的基礎上，主要做了以下幾點工作：從質量守恆方程和euler方程出發，以某一水層處水平速度矢量作為獨立變量，推導出包含底摩擦耗能、波浪破碎效應和子網格湍流效應的改進型boussinesq方程。
  18. 2 ) radar incidence angle and surface roughness correction : to make radar incidence correction and eliminate the surface roughness effects, a wide range of surface parameters ( soil moisture, surface rms height, correlation length, incidence angle ) was input to the ibm model to simulate the effect of surface roughness and radar incidence angle on the sensitivity of soil moisture to the radar backscattering coefficient. a simple model was established to simulate the effects of incidence angle and surface roughness. 3 ) establishment of soil moisture change inversion model : according to a modified ibm model simulation results, the bare surface backscattering coefficients can be expressed as a funtion of the dielectric component for a given surface roughness when the surface slope greater than 2. 0, which is valid for most nature surface : in above equation, r0 is the surface reflectivity at normal incidence

    本研究中，首先利用基於微波輻射傳輸方程的微波植被模型和積分方程（ iem ）模型模擬了各種地表土壤水分含量情況下，植被覆蓋、地表粗糙度（包括地表均方根高度和相關長度） 、雷達入射角對c波段（頻率4 . 7ghz ）水平極化（ hh ）雷達後向散射系數的影響，在此基礎上，建立模型消除了植被覆蓋、地表粗糙度、及雷達入射角對雷達後向散射的影響，利用多時相50m解析度radarsatscansar雷達後向散射系數圖像反演得到了地表土壤水分變化模式信息。
  19. We have the following results through simulation and experiments : i ) turbulent structure constant of atmosphere decreases with altitude ; ii ) turbulence induced power scintillation decreases with the optical wavelength ; iii ) scintillation of space - to - ground optical propagation is smaller than that of horizontal optical propagation ; iv ) power scintillation of space - to - ground optical propagation increases with wavelength ; results above are accord with existent theory. what ' s more, the last result discovers a new rule

    通過對數學模型和模擬結果的分析，得到以下結論： a ）大氣湍流結構常數隨海拔高度的增加而迅速減小； b ）由湍流引起的光功率閃爍與波長呈反比； c ）空-地激光通信的光功率閃爍小於地面水平傳輸的閃爍； d ）空-地激光通信的光功率閃爍與波長呈正比；上述結果與理論保持一致。
  20. The experiment data from horizontal gas - liquid flow on 20mm and 25mm diameter pipes proved that separate phase flow - rate can be measured from differential pressure signal

    Dn20和dn25水平管氣液兩相流實驗數據表明，利用差壓波動信號進行兩相流分相流量的測量是可行的。
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