勢渦 的英文怎麼說

中文拼音 [shìguō]
勢渦 英文
potential vortex
  • 勢 : 名詞1 （勢力） power; force; influence 2 （一切事物力量表現出來的趨向） momentum; tendency 3 （自...
  • 渦 : 渦名詞1. （漩渦） eddy; whirlpool; vortex 2. （酒窩） dimple
  1. These results tend to agree with the observations associated with traveling convection vortices and midday sub - auroral patches

    上述結果在趨勢上與觀測到的輸運對流渦旋和亞極光塊的運動特徵一致。
  2. We can use the mm5 model in definite time, definite area weather forecasting. we conclude that : : the moving route of this necw in its developing progress was direct - south along latitude, the cold air is rough, and just this made the rough vertical velocity ; the necw southern moving and conflicting with the west pacification sub - tropical high makes rough jet steam. the plenty south - west warm and wet air made by the jet stream gave the rainstorm demanded vapor ;. the rough vertical velocity by jet stream is a main reason in this rainstorm ; the mm5 model uses four - direction analysis data as its input, this avoids some errors occurred in observe and transfer, thus made the result more useful

    綜合分析認為： （ 1 ） 、這次冷渦在其發生發展過程中，其移動路徑是沿經圈直線南壓，攜帶的冷空氣勢力較強，形成槽后較強的垂直運動； （ 2 ） 、西太平洋副熱帶高壓偏北位置與東北冷渦南壓形成的急流軸，把源源不斷的西南暖濕氣流輸送到遼西地區，也就是急流軸的左前方位置，為這次暴雨的產生提供了充足的水汽來源； （ 3 ） 、低空急流不但為暴雨輸送水汽，其造成的較強的垂直環流也是產生強降水的一個主要原因； （ 4 ） 、 mm5模式以四維同化資料作為初始場，最大限度地避免了觀測誤差可能造成的積分不穩定，提高了模擬結果的參考價值。
  3. In the second part, firstly, the mathematical model for predicting hydrodynamic characteristics of varivec propeller under steady or unsteady condition are present, based on the general propeller lifting - surface theory, potential flow theory and green theorem. then, theoretical calculation methods for predicting hydrodynamic characteristics of varivec propeller designed above paragraphs are present, based on the finite basic solution method, the unsteady vortex lattice method and hess - smith method

    在理論計算部分，本文首先基於常規螺旋槳升力面理論、勢流理論和格林定理建立了定常和非定常狀態下全方向推進器水動力性能計算的數學模型，然後利用有限基本解法、非定常渦格法和赫斯?史密斯方法對全方向推進器定常和非定常狀態下的數學模型進行了數值離散，接下來針對前面所設計的全方位推進器進行了數值預報。
  4. The result shows the volume transport in the four sections have the maximum in summer and the minimum in winter, especially in the two sections of 140 band 170 e. the eddy structure in both sides of the kuroshio extension is another distinct character

    結果表明:穿過這四個斷面的流量均呈現夏大冬小的季節變化趨勢，其中140 「 e和170 「 e兩個斷面的季節變化比較明顯。黑潮延續體另一顯著特徵是主軸南北兩側的多渦結構。
  5. Optical nondestructive testing as a kind of the nondestructive testing techniques is introduced and compared with the traditional nondestructive testing techniques like rt, ut and et, et al. its applied merits generalized illustrate that the shortages of nondestructive testing techniques can be covered by the optical techniques to a great degree, which indicates that the optical nondestructive testing has great advantages and application prospects in industrial testing area

    介紹了一種新型無損探傷技術? ?光學無損探傷的應用，將其與傳統無損探傷技術（如射線探傷、超聲波探傷、渦流探傷等）進行比較，對其優點進行了總結，說明光學無損探傷可以在很大程度上彌補傳統技術中的不足，揭示了其在工業檢測領域的巨大優勢和廣闊前景。
  6. 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。
  7. The top sediment above 1. 8m depth was referred to be the deposit under the cold water mass since 9. 7kabp. in the middle southern yellow sea. q - mode factor analysis was employed on 98 samples and 33 benthic foraminiferous species with relative abundance of more than 2 % in at least 3 samples and 5 varimax factors had been recognized as follows : factor 1 ( ammonia beccarii vars

    南黃海中部泥質區的ey02 - 2孔共揭示了氧同位素6期以來的海侵海退序列，該孔浮遊有孔蟲匱乏，說明黃海暖流對鉆孔所處南黃海中部冷渦泥質沉積區影響一直很弱，底棲有孔蟲中玻璃質殼占絕對優勢，比例為93 . 87 100 。
  8. Although the induced emf is not altered, the currents and their heating effects are minimized.

    雖然感生電動勢沒有改變，但卻把渦電流及其熱效應減到最小。
  9. In the uncertainty of the position, with the menace of serious danger, which gave a peculiarly intense character to everything, in this whirlpool of ambitions, of conflicting vanities, and views, and feelings, and different nationalities, this eighth and largest party, absorbed only in the pursuit of personal interests, greatly increased the complexity and confusion

    在這動蕩不定的局勢中，在這使一切都處在驚慌和不安的嚴重危險中，在這陰謀自私互相沖突各種觀點和感情的漩渦中，加之所有這些人的種族差異，這人數眾多，未謀私利的第八派給共同的事業增加了極大的混亂和驚慌。
  10. Based on t213 and other observational datasets, a severe heavy rain occurred in changjiang - huaihe basins during 4 - 5 july 2003 is studied. the primary diagnostic analyses show that double or single block is the characteristics of the macroscale circulation in this rainfall process. the strong conflict of warm and cold mass, mesoscale convergence on meiyu front, shear line, and stably maintaining of high and low jets make for the rainfall

    本文採用地面高空常規資料，每6h一次的降水資料，以及t213數值預報資料，對2003年7月4 - 5日發生在江淮地區的一次梅雨鋒暴雨過程的影響系統及其可能機制進行了初步的診斷分析，發現，高緯雙阻、單阻形勢是這次暴雨過程發生的大尺度環流特徵；冷暖空氣的激烈交鋒、梅雨鋒上的中尺度輻合線、 700hpa 、 850hpa上的低渦、切變線以及穩定維持的高低空急流是導致這場暴雨的直接影響系統；該地區維持一個高能、飽和、潛在不穩定的環境，有利於特大暴雨的產生和維持。
  11. The cycle parameters of missile for turbofan engine were optimized for meeting the demand of maneuverable missile, and the developing trend of missile for turbofan engine was predicted

    根據飛航導彈的要求對渦扇發動機進行了循環參數優化選擇並預測了未來渦扇發動機的發展趨勢。
  12. Through the thermodynamic analysis for the sandstorm weather according to the simulated potential temperature, potential vorticity field, it is found that this sandstorm weather occurred in the condition of the atmospheric stratification stability, the area of the high potential temperature value and the potential temperature gradient have a good corresponding relationship with the surface cold air and cold front, so are the strength of potential vorticity and the different developing stage of sandstorm

    利用輸出的位溫、位勢渦度場，對沙塵暴天氣進行熱動力條件分析，發現本次沙塵暴天氣發生在大氣層結穩定狀態下，位溫大值區及位溫梯度與地面暖低壓的強弱和移動有著很好的對應關系，位渦的水平分佈特徵和強弱變化對沙塵暴的出現時間和落區有一定的指示意義。
  13. In the central mud of the northern yellow sea there lies an anti - clockwise eddy, indicating that sediments converge here, and once again confirming the conclusion reached by cheng ( 2000 ) that sediment convergence occur in the central northern yellow sea

    對應于北黃海中部泥區沉積物凈輸運圖出現為一個反時針的渦漩，表明沉積物的輸運取匯聚態勢，這也證實了程鵬（ 2000 ）有關沉積物向北黃海中部匯聚的結論。
  14. The distributing patterns of the eulerian residual currents of the four major tide constituents ( i. e. m2, s2, ol and kl ) imply that fine - grained sediment transport over the central mud of the northern yellow sea is weak. the eulerian residual currents of kl and s2 respectively form an anti - clockwise eddy near the coastal mud - deposit area of northern shandong peninsula, which may increase the deposition rate of mud

    各分潮歐拉余流總的分佈趨勢表明北黃海中部泥區細顆粒沉積物輸運的量值很小， k1和s2分潮歐拉余流各自在山東半島北側近岸泥質區形成的順時針渦漩可能促進了該處的泥質沉積。
  15. At first an analysis of the basic principles of the vertical - axis variable - pitch turbine is given including two methods to calculate the induced velocity. one is the three different streamtube - methods which are single - disk single - streamtube ( sdst ), double - disk single - streamtube ( ddst ) and multi - streamtube ( mtt ) method based on the momentum theory, the other is the vortex method ( vtth ) based on the potential eddy theory

    一是根據動量定理的流管模型得到的求解誘導速度的單盤面?單流管方法（ sdst ） 、雙盤面?單流管（ ddst ）方法、多流管（ mtt ）方法；二是根據勢渦理論得到的求解誘導速度的的渦方法（ vtth ） 。
  16. These variable geometry components include high pressure - compressor, high - pressure turbine, low - pressure turbine, inlet area ratio of mixer and main nozzle throat area. the results of calculation show that the adjusting of low - pressure turbine and mixer has a remarkable effect on the performance of engine and bypass ratio

    計算結果表明，低壓渦輪和混合器的調節對發動機的性能和涵道比的影響尤為顯著；在其它部件幾何結構不同時，單個部件幾何調節后，發動機性能的變化趨勢是不同的。
  17. In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation

    本文分別用守屋的保角變換法和基於源匯渦分佈的面元法，建立了計算槳葉表面壓力分佈的數學模型；應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法，建立了計算機翼表面邊界層內部流動的數學模型；應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法，建立了槳葉表面二相流流動的計算方法和相應的計算機程序。
  18. The circumstance calculated by mm5 forecast system is very near compared with the real one ;. the physical quantity and precipitation calculated by mm5 forecast system should be well used in work ; the area and numeric of the precipitation forecasted by mm5 have some difference compared with the fact, that needs more some more work to make progress

    該模式對這次冷渦暴雨的形勢模擬與實際形勢場極其接近，是一個成功的應用範例； （ 5 ） 、 mm5模式對各種物理量和降水場的模擬結果與實況接近，在精細化的定點定量預報實踐中具有很好的參考價值； （ 6 ） 、 mm5模式預報降水范圍和強度與實況還有一定偏差，需要進一步深入的工作來改進。
  19. The analysis of dry pv shows that the high pv dominate the area of typhoon, the higher is the center value of pv, the stronger is the typhoon. lt is also shown that the most important reason resulting in rainstorm is the cold air ( high pv ) which spreads to south from the upper troposphere or lower stratosphere and transports into the warm air. the joining situation of upper and lower pv area make vortex develop. pv transpotation reduces static stability, which increases the releasing of instability energy and makes rainstorm amplify

    對干位渦的分析表明：臺風或臺風環流區為高值位渦區，臺風越強，位渦中心值越大；對流層上部或平流層下部冷空氣（高位渦）的擴散南下與暖濕氣流的交匯是造成特大暴雨的重要原因，因為上游斜壓性的發展使對流層頂發生折疊，平流層與對流層相互作用增強，上下位渦區相接的形勢使低層渦旋發展，上升運動加強，位渦的下傳有效地降低了靜力穩定度，有利於位勢不穩定能量的釋放，使得暴雨增幅。
  20. Then, four different computation methods are applied to compute the hydrodynamic performance of the rotor, which are single - disk single - tube method ( sdst ), double - disk single - tube method ( ddst ), multi - tube method ( mtt ) that are based on momentum theorem and vortex method ( vtth ) that is based on potential eddy theory

    然後，採用基於動量定理的單盤面?單流管方法（ sdst ） 、雙盤面?單流管（ ddst ）方法、多流管（ mtt ）方法以及基於勢渦理論的渦方法（ vtth ）計算直葉擺線式水輪機的水動力性能。
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