波慢度 的英文怎麼說

中文拼音 [bōmàndù]
波慢度 英文
wave slowness
  • 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...
  • 慢 : Ⅰ形容詞1. （速度低; 走路、做事等費的時間長） slow 2. （態度冷淡, 沒有禮貌） supercilious; rude Ⅱ動詞（從緩） postpone; defer
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. Abstract : propagation characteristics of r wave in a pavement structures are analysed in this paper. based on the propagation characteristics of r wave, the horizontal propagation wave is simulated by using r wave, the vertical propagation wave is also simulated by using body wave in calculating dynamic response of pavement structures. the availability and accuracy of dispersion curves measured by sasw in pavement structures is analysed by using the presented method used to calculate dynamic response

    文摘:利用有限單元法分析了道路結構的r面波傳播特性：在深度方向上衰減較慢，傳播較深，波動性大.提出了在道路結構動力響應計算中，利用面波來模擬水平向傳播波，利用體波來模擬豎直向傳播波.通過算例來驗證該方法的可靠性和精確性，並利用這一動力響應計算方法分析了道路結構表面波測試中所獲彌散曲線的可靠性
  2. Round we went with the tide, until we got well under the lee of the point, when suddenly the speed slackened, we ceased to make way, and finally appeared to be in dead water.

    我們隨波逐流，四處飄蕩。到了海岬下面的避風處，速度突然減低，船慢慢停了下來。最後就好象走進了一道死水灣似的。
  3. At the same time the influence of the cavity in front of slow - wave structure and the length of a smooth drift tube which connect two sections of slow - wave structure are also studied in this dissertation

    然後利用magic粒子模擬軟體模擬了反射器對器件工作性能的影響，同時還分析了慢波系統前面的腔體以及兩段式慢波結構中過渡段的長度對器件工作性能的影響。
  4. The product quality faces up to enormous domestic and international markets challenge and the peasants face up to the slow increasing of their incomes. the shortage of water resource is more serious for the planted system, climatic change and low utilization ratio. cultivated land resource is reducing rapidly for nature factors and urbanization process, etc. the analysis results indicate the resour ces utilization mode in the hhh plain is still high investment, high - energy consumption, and grievous pollution

    農產品生產在我國佔有絕對優勢，但其受結構調整的影響也發生了波動性變化，其產品質量面臨著國內外市場巨大的挑戰，農民收入也面臨著增長緩慢的挑戰；水資源受種植制度、氣候變化及利用率低等多種因素的脅迫作用，嚴重短缺；耕地資源近年來大量減少，受自然及城市化進程等因素的影響，稀缺程度加大。
  5. The spin - down rate has been measured for almost every radio pulsar, and theory indicates that it depends on the strength of the star ' s magnetic field

    這種自轉變慢的速率，幾乎每一顆無線電波霎都量得到，而理論指出，此速率和星體的磁場強度有關。
  6. They not only have the quality of slow decay, but also narrow beam and focused energy, which are widely used in military and communication

    慢衰減電磁波的衰減比一般電磁波慢，可以實現較大的探測深度；由於它的頻率高，可以實現較高的解析度。
  7. It is found that the couple of foppl vortex is unstable from the beginning when it engendered. the changing frequency is very slow at first, almost 2. 5 % ~ 3 % of the frequency when it is stabled. the amplitude is also so limited at the beginning the maximum is only about 0. 035 % ~ 0. 05 % of the amplitude when it develops fully

    ） ppl渦對從產生的一瞬間就是不穩定的，其初始變化頻率十分緩慢，初始變化頻率大約是周期變化穩定以後變化頻率的2 . 5 3左右；波動幅度也十分有限，其初始階段最大值僅為周期性充分發展幅度的0 . 035 0 . 05左右。
  8. The result of thermal analysis for coupled - cavity slow - wave structure had been achieved in the form of temperature contour figure and heat flow density vector figure

    對耦合腔慢波結構熱特性的模擬得到了以溫度分佈雲圖和熱流密度矢量圖方式表示的結果。
  9. This isi series oscillation has following characters : ( 1 ) long term cycle duration, whose duration of most oscillations ranged from 3 0 - 120ms, so we called it slow wave oscillation ; ( 2 ) large amplitude of oscillation, the minimum isi is about 2ms while the maximum is beyond 40ms, which suggested that the firing frequency vary from several tens to hundred hz ; ( 3 ) abrupt turn always occurs during the continuous change in isi, this turn is called inflexion temporarily

    該振蕩波有下述特徵： （ 1 ）振蕩周期較長，多數在30 ? 120s范圍，故稱慢波振蕩； （ 2 ）振蕩幅度較大，其isi振蕩最小值在zms左右，最大值可達40ms ，表明放電頻率可在幾十到幾百k范圍內變動； （ 3 ）在isi連續變化過程中往往出現突然轉折，暫稱其為拐點。
  10. On the base of widely investigating and researching, author deems that the conventional reactive power compensation devices used by consumer had many defects with among others : lower response time, remaining residual voltage on the compensation capacitors, and so on. because of existing improper trigging time, it is impossible to realizing balance compensation for 3 - phrase unbalance loads

    本文在充分調研的基礎上，認為目前採用的傳統的無功功率補償裝置存在響應速度慢、觸發時刻不合適、補償電容器上有殘壓、不能實行三相平衡補償、對電網產生污染、不能消除負荷本身產生的高次諧波等弊病。
  11. The results show that the electron mean drift velocity is affected by the cathode radius, the impedance of the load diode, the inner radius of vanes and the input voltage

    結果表明電子平均漂移速度決定於陰極桿半徑、負載二極體阻抗、陽極慢波葉片內徑和輸入電壓。
  12. When pure shear wave propagate in anisotropy media, even thought propagation direction is parallel to the direction of aligned cracks, experimental results exhibit that only two kinds of shear - wave velocity can be measured - fast shear wave and slow shear wave neglecting polarization direction

    這個實驗結果進一步表明，純橫波在各向異性介質傳播時，即橫波的傳播方向與裂隙平行，無論橫波的偏振怎樣改變，只能觀測到兩種橫波速度，快橫波和慢橫波。
  13. The second wave, the one that can cause damage, moves at a slower four kilometers per second

    第二種波速度較慢但可能造成危害，以每秒4千米的速度傳播。
  14. Comprehensively discuss the issues in application, adaptive condition and performance, propose a fast arithmetic of forward modeling and depth migration in common shot gathers with one - way acoustic wave equation based on vrselrf, and verify the arithmetic by numerical simulation. concisely discuss the cause of the creation of evanescence and the problem of lateral amplitude discontinuity result from it. fourthly, use the reflectivity model, computed to describe the fracture model, with the formula of computation reflectivity based on elastic - acoustic approximation, and the wavelet model computed by the method, wavelet creation with fourier transform, we proposed, in conjunction with vrselrf wavefield extrapolation operator

    第三，將頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）應用於疊前與疊后正演模擬、疊前與疊后深度偏移，對演算法應用中應注意的問題、適用范圍、性能等作了較為全面的論述；提出了基於vrselrf的單程聲波方程共炮記錄正演模擬和深度偏移快速演算法，並通過數值模擬試驗對演算法進行了驗證；簡要地討論了倏逝波的產生原因及其帶來的橫向振幅不連續性問題。
  15. Author, starts from the one - way wave equation of wavefield extrapolation, research the relationship and transform condition of wavefield extrapolation operators, and propose the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) which can adapt severe lateral velocity variations, in frequency - wavenumber domain, and the improved wavefield extrapolation scheme, also give the method to improve the computation efficiency. the achievement establishes the theoretic basis of the whole research

    首先，從波場延拓的單程波方程出發，系統地研究了頻率波數域的波場延拓運算元之間的相互關系和轉換條件並在此基礎上提出了能適應劇烈橫向變速的頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）和部分波場延拓改進方案及提高運算效率的措施，為整個研究打下理論基礎。
  16. While the new components having the same numbers with these original physical vectors are introduced and the new components are combined with those original physical components to form a new symplectic space, the ray problem of wave propagation in geometrical optics is converted into the problem of lagrange submanifold in the symplectic space

    通過引入波向量（慢度向量） ，將物理空間中幾何光學的射線問題轉化為辛空間中的lagrange子流形（超曲面）問題。
  17. Attenuation characteristic of fast wave, slow wave, quasi - transverse wave and anti - plane transverse wave are discussed and the combined effects of the anisotropy of the solid skeleton and fluid viscosity on the propagation characteristic of plane waves are analyzed numerically. the influence of horizontal anisotropy and fluid viscosity on the propagation characteristic of elastic waves is clarified

    討論了液飽和多孔介質中快波、慢波，準剪切波和反平面剪切波的衰減特性，並分析了固體骨架異性以及流體粘度的綜合效應對平面波傳播特性的作用，澄清了介質水平面內異性以及流體粘度對彈性波傳播特性的影響。
  18. Prestack migration method, based on wave motion equation, is also developed for receiver function, and compared with ray method. both p - to - s conversion wave and direct p phase contained in receiver function are migrated and imaged by reverse - time migration for data gather including all receiver functions recorded in all seismological stations for one event, and imaging profile is finally obtained by stacking for all events

    本文還在接收函數射線反投影疊加成像的基礎上，提出了一種基於波動方程的接收函數疊前偏移成像方法，將同一事件接收函數中的轉換波和直達p波震相以各自的速度向深度方向逆時延拓成像，並通過不同慢度接收函數的疊加，得到最終的偏移成像結果。
  19. The way reduces the error. this paper also particularizes the prime parameter of the echo - - radar cross section ( rcs ) which is influenced by many factors. considering the fluctuation of rcs and the modulation by the radar antenna, the paper contains both slow and quick fluctuating targets

    兩種回波的模擬數據表明：模擬結果與理論模型的結論符合很好，能夠滿足運動目標回波幅度分佈特性的要求；並且在多數情況下，雷達探測到的目標都是慢起伏目標。
  20. Concerning the problem of low accuracy and speed of filter in bearings - only target tracking, the algorithm of underwater bearings - only passive target motion analysis is improved from ekf to maekf

    摘要針對純方位被動目標跟蹤中擴展卡爾曼濾波器容易發散，從而導致濾波精度差而且收斂速度慢的問題，文中將水下純方位被動目標運動分析中的擴展卡爾曼濾波演算法改進為衰減記憶卡爾曼濾波演算法。
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