脈動面 的英文怎麼說

中文拼音 [màidòngmiàn]
脈動面 英文
pulsating surface
  • 脈 : 脈名詞1. （動脈和靜脈的統稱） arteries and veins2. （脈搏的簡稱） pulse 3. （像血管的組織; 連貫成系統的東西） vein
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 脈動 : [物理學] [天文學] pulsation; pulsing; pulse; ripple; impulsive motion; pulsating; panting; loping...
  1. Based on the analysis of thermal contact metamorphic aureoles, granitoid interior structure, quartz axis fabric and strain characters in the different rock unites of yuanshishan granitoid and its wall rocks, the emplacement mechanism of yanshishan granitoid was studied. the magmatic explictite dynamic was advanced in light of regional stress and magma dynamic research. those conclusion was synthesized to ascertain the emplacement mechanism - granitic magma ascended in dikes with the minimum critical width of the magma ascending channels about 2. 213. 88m and located in the core of yindianshan dome with the passive style of dyke explictite ; the later unite is a kind of multiple emplacement mechanism with the character of active emplacement of ballooning

    同時運用巖漿動力學原理從另一個角度探討其侵位驅動力。綜上指出：經分凝后的活動性巖漿在深部側向擠壓和浮力的聯合驅動下，沿深大斷裂以最小臨界寬度為2 . 213 . 88m的裂隙脈動上侵，整體以巖墻擴展的方式被動定位於銀殿山穹窿的核部，但後期屋面前單元具有主動侵位的特點應為一種復合定位機制。
  2. Fluid noise mainly comes from out put pulsation of rate of flow, the main reason of out put pulsation of rate of flow is the instant high pressure return flow that obturation cubage produced when the big round curve pressure transition. the v trough on the port plate can reduce the fluid noise. in this paper, the author based on the acting of dam a river and condensability of liquid and used matlab language as tool to calculate the v trough on the original port plate and drew out the p - t diagrammatic curve and analyzed its shortcoming and improved the design of original v trough and got that the best size of its angle was 12. 3 and its length was 5mm and the cross section was an equilateral triangle

    流體噪聲主要來源於輸出流量脈動，造成輸出流量脈動的主要原因是閉死容積在大圓弧段壓力切換時產生的瞬時高壓迴流，在配流盤上開設v型尖槽可降低因高壓迴流而引起的流體噪聲，本文以截流作用和液體的可壓縮性為理論依據，以matlab語言為工具，對原配流盤上的v型尖槽進行了理論計算，繪制出p - t圖線，分析了它的不足，並對原有v型尖槽進行了優化設計，得出了v型尖槽的最佳幾何尺寸：配流盤平面上的v型尖槽的兩邊的夾角為12 . 3 ，槽長5mm ，槽的橫截面為等邊三角形。
  3. Thirdly, the correlative coefficient is computed between the pressure fluctuation signal of draft tube and the displacement signal of upper guide bearing, the thrust bearing and the head cover, with this the conclusions on the shafts response due to pressure surge in

    並與模型尾水管壓力脈動試驗結果進行對比?結合流動模擬試驗以及動力特性計算結果，全面分析?評定機組的實際運行狀況，劃定運行區域，為電站合理調度
  4. Research on wind is the precondition of wind response, then the section plane of static wind, intensity of onflow, psd function and correlativity of dynamic wind are involved in

    對風的研究是進行風振響應研究的前提，風的基本特徵包括平均風速剖面、湍流強度、脈動風功率譜密度函數、脈動風的空間相關性以及極端風速的概率統計特性。
  5. The research work in nonlinear pulsatile flow and nonlinear pulse wave propagation is reviewed

    本文首先回顧了前人在彎曲動脈中脈動流和脈搏波傳播方面的研究工作。
  6. Results sympathetic nerve coming form the cervical part coincided, attached to vertebral artery surface

    結果來自頸交感乾的交感神經在椎動脈橫突段周圍相吻合，並攀附於椎動脈表面。
  7. Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles

    對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。
  8. 3. a three - dimensional - acoustic doppler velocimeter has been used to measure the velocity and turbulence in a compound channel with vegetated and unvegetated flood - plains. particulary in the interface region between main channel and floodplain. the distribution in three coordinate directions of velocity and turbulence intensities and the renolds stresses are presented. the momentum transfer at the main channel flood - plain interface can be described as an apparent shear stress which can be quantified as a function of the local turbulence at the interface

    採用adv對灘地種樹前後灘槽交界區域的流速場進行了量測。分析了灘槽交界區域的垂線流速、紊動強度和雷諾應力的變化。將灘槽交界的動量傳遞描述為一表觀應力，這個表觀應力可以看作是交界面處的脈動函數並將其定量化。
  9. Furthermore, the isoline maps of mean wind pressure coefficients and rms wind pressure coefficients of the structure under various wind directions are plotted. in the matter of theoretical analysis, modeling with finite element method, using the local mean wind pressure coefficients and time history of fluctuating pressures determined in wind tunnel, the wind - induced dynamic responses for long - span grid roof structures are calculated in frequency domain and time domain separately

    在理論分析方面，建立合理的有限元模型，利用剛性模型風洞試驗獲得的各種不同情況下屋面各節點的平均風壓系數和脈動風壓時程，在頻域內和時域內進行了大跨網架屋蓋結構的風振響應分析。
  10. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。
  11. The study shows that the output pulse value of resistance absorption equipment is related to the chopper switch conduction ration and the selection of lagging angle

    研究表明，地面電阻吸收裝置的輸出電流脈動與斬波器的導通比、各支路斬波器的開關滯后角有關。
  12. On the basis of theory analysis, the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ). the dc value was closely related to both particle concentration and surface area of sand clay simultaneously. the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients. then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0. 981. so the model of automatical control system of water treatment plant was established using the formula

    應用透光率脈動檢測技術和光散射顆粒粒度分析儀（ pda ） ，通過理論分析，將pda的輸出信號之一? ?平均透光強度（對應于dc值）作為原水的特性表徵參數， dc值可以同時反映顆粒濃度和比表面積因素的影響，試驗結果證明， dc值與單位體積水中泥沙顆粒總表面積s _ p之間具有很好的冪函數關系： dc = cs _ p ~ d ，式中c 、 d為經驗系數，進而得到了以dc值為參數的高分子絮凝劑投藥量公式： d = f （ dc ） = e （ dc ） ~ f ，式中： e 、 f為經驗系數，平均相關系數達0 . 981 ，利用所建立的公式，建立了前饋? ?后饋聯合控制的在線自動投藥模型。
  13. A comparison of the flows with different gate - opening rates shows the causes that opening the gate at a higher rate is favorable to the reduction of cavitation, gate vibration as well as the gate load fluctuation. in addition, a study has been made to show the influence of the high - speed jet flow coming downward from the narrow gate gap on the flow condition in the tunnel downstream to the gate

    通過分析比較不同閥門開啟速率對流動特性的影響，闡明了快速開啟閥門不僅有利於減少空化空蝕也有利於減小弧門振動和啟門力的脈動，此外，研究了門楣處狹窄縫隙高速射流對門后流態、壓力脈動和弧門受力等方面的影響。
  14. The mathematical model of diesel - generator set in the mechano - electronic transient process is proposed in this paper, the pulsation and delay of diesel torque are analyzed, the relation between diesel torque and diesel rotational speed together with injection pump rack bar displacement is described exactly. the motion law of diesel - generator set is revealed all - sidedly and nonlinear problem of diesel - generator set is settled by piecewise linearzation method

    本文提出了柴油發電機組機電暫態過程的數學模型，分析了柴油機轉矩的脈動和滯后，準確地描述了柴油機輸出軸扭矩與柴油機轉速和噴油泵齒桿位移之間的關系，全面揭示了柴油發電機組的運動規律，利用分段線性化的方法解決了柴油發電機組的非線性問題。
  15. The detailed experimental investigation of the distribution and evolution of the mean velocity profile were executed. the signal of instantaneous velocity, the energy spectra of velocity and wave characteristics in the boundary layer have been analyzed

    對局部加熱的水平平板下表面邊界層內的時均速度的演化規律進行了詳細的測量，同時對速度脈動信號以及速度能譜進行了分析，並對邊界層內的波動特性進行了研究。
  16. The turbulent flow in open channel is tested with laser - doppler anemometer, in which the longitudinal time average velocity and fluctuating velocity of turbulent flow in open channel under the conditions of the sudden changes of roughnesses at different water depths are measured

    摘要通過激光測速儀，對壁面糙率突變時的明渠紊流進行試驗，測量了糙率突變不同水深情況下明渠紊流的縱向時均流速和脈動流速。
  17. In this dissertation, wind, vehicle and bridge are regarded as an interactional coupling vibration system., in the analysis model of the system, many factors are considered in detail, such as the fluid - solid coupling interaction between wind and bridge, the solid contact coupling interaction between vehicle and bridge, the stochastic wind load of vehicle, the time variation characteristic of the system induced by train movement

    本文將風、車、橋三者作為一個交互作用、協調工作的耦合振動系統，較全面地考慮了風橋間的流固耦合作用、車橋間的固體接觸耦合作用、風對車的空間脈動作用及整個系統的時變特性。
  18. A hairline fracture in the cola coloured veneer which seperated my cup of tea from the throbbing liquid lava of red disco heaven beneath the surface of the table

    在可樂色薄板上的細裂紋，它從桌子表面之下的脈動的紅色迪斯科天堂的液體熔巖分開了我喜愛的東西。
  19. Presently most of the theoretical method to predict the propeller - induced hull pressure fluctuation is based on the calculation method in which the pressure is induced by pulsating source in infinite flow. the calculation method is adopted and the corresponded computer program is complied. the propeller - induced hull pressure fluctuation due to blade thickness, blade load, cavity thickness and the change of the cavity volume can be analyzed respectively in the computer program

    目前，螺旋槳誘導的船體表面脈動壓力的理論預報方法，大多是以無限流場中點脈動源誘導的周圍流場的脈動壓力的計算方法為基礎的，本文採用該方法編制了計算程序，可以分別考慮槳葉厚度、槳葉負荷、槳葉上空泡厚度及其體積變化在船體表面指定位置上產生的脈動壓力。
  20. And then simulations of gas - particle two phase plane wake and gas - particle two phase plane jet were carried out by using this model. after numerical simulations of the two flow fields were finished, series of analytical work was done. first, the distribution of time - averaged velocity, turbulence intensity was analyzed, and some of the simulation results were compared with those of the experiments ; the coherent structure of vortices in the near wall region of the plane wake flow were studied by describing the evolution of the eddy structures, including the forming, developing and shedding from the wall of the vortices in the near wall region ; the coherent structure of vortices in the whole field was also studied, such as the forming, developing, moving, pairing and merging of the eddies etc.

    在對上述兩種流動形態的二維大渦模擬研究中，首先全面地分析了氣相時均流場的速度、湍流強度的分佈規律以及氣相速度的脈動規律等並就部分數值模擬結果與實驗結果進行了對比研究；分析了平面尾跡流場中近壁處旋渦擬序結構，全面和逼真地反映了近壁處旋渦的生成、發展和脫落的規律；描述分析了平面尾跡流和平面射流的全場流動旋渦擬序結構，從整個流場的角度反映旋渦的生成、發展、運動以及旋渦之間相互配對、合併的作用規律等。
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