流體切變 的英文怎麼說

中文拼音 [liútǐqiēbiàn]
流體切變 英文
fluid shear
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 體 : 體構詞成分。
  • 切 : 切Ⅰ動詞1 （合; 符合） correspond to; be close to 2 （用在反切后頭 表示前兩個字是注音用的反切）見 ...
  • 流體 : [物理學] fluid; fluor流體力學 fluid mechanics; hydromechanics; 流體生物學 hydrobiology; 流體運動學 hydrokinematics
  1. Objective to investigate the effects of fluid shear stress on il - 8 gene in human umbilical vein endothelial cells ( huvecs ) and the roles of time course of low shear stress and intensity of fluid shear stress using lightcycler ? system ; to investigate the gene expression profiles in huvecs exposed on low shear stress ( 4. 20 dyne / cm2, 2 h ) and incubated by 17 p - estradiol ( 10 - 7 m ) + low shear stress ( 4. 20 dyne / cm2, 2 h ) using the cdna microarray approach. methods endothelial cells were isolated from human umbilical cord veins by collagenase treatment as described by jaffe and modified

    目的探討人臍靜脈內皮細胞（ humanumbilicalveinendothelialcells ， huvecs ）在流體切應力作用下il - 8基因的誘導表達以及切應力的作用時間和作用強度對il - 8基因表達影響的變化規律；利用表達譜基因晶元技術研究內皮細胞在低切應力（ 4 . 20dyne cm ~ 2 ， 2h ）作用下其切應力相關基因的表達情況以及生理濃度（ 10 ~ （ - 7 ）的17 -雌二醇孵育內皮細胞48h ，再經同樣條件的切應力處理后對內皮細胞切應力相關基因表達的可能影響。
  2. The result indicates that, in the course of the rainstorm in huoshan, there are obvious low - level jet of great intensity, infection of mesoscale shear line, enhancement of plus vorticity which increases intensity of convergence, improves ascending velocity and brings on precipitation, and quick enhancement of helicity which provides the basis to forecast, in addition, convergence of moisture flux and analyzed potential vorticity which reflects baroclinic convective instability sufficiently indicate the characteristics of the rainstorm

    結果表明：此次霍山暴雨發生前後，存在明顯的大強度低空急流，並受到中尺度切變線的影響，而且正渦度的加強引起了輻合加劇，提高了上升速度從而引起降水，同時暴雨發生前螺旋度的迅速增強，也為預報提供了根據，另外水汽通量的輻合以及分析位渦反映出的斜壓對流不穩定都充分體現了這次降水的特點。
  3. Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented

    許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型
  4. Supercritical fluid extraction and fractionation ( sfef ) are used to separate daqing and liaohe decanted oils into a number of narrow fractions

    摘要以大慶和遼河油漿為研究對象，採用超臨界流體萃取分餾技術將其切割成窄餾分，分析了油漿窄餾分的性質及組成隨收率變化的規律。
  5. According to the working modes of mr devices, combining the ohm ' s law of magnetic circuit and the design theory of non - steady magnetic circuit, magnetic structures of the automotive damper have been worked out. to emulate the performance of conventional shock absorber, two automotive mr dampers were designed and fabricated at chongqing university. an applied magnetic field increase the yield stress of mr fluids in flow annular passages, which alters the velocity profile of mr fluid in the passages and raise the pressure gradient between low cavity and high one at some given flow rates

    根據磁流變阻尼器工作模式，利用磁路中的歐姆定律和動態磁路設計原理，結合汽車懸架的技術要求和結構特點，提出了基於剪切模式和流動模式共同作用（混合工作模式）的汽車磁流變阻尼器設計原理，討論了阻尼器動態磁路設計中的若干技術問題；根據流體力學navier - stokes方程，分別利用newton流體特性和bingham流體特性，推導了基於平板模型和軸對稱模型的流變學方程，得出了阻尼器阻尼力的計算方法。
  6. Solution of nonlinear wave loads in regular oblique seas. based on strip method, thinking about nonlinear factors such as no straight shipboard on waterline, the instantaneous variation of wet surface shape and slamming effect of ship bottom, the numerical methods of nonlinear fluid force in large amplitude oblique regular seas are discussed

    關于斜浪規則波中非線性波浪載荷的計算:本文基於切片理論，考慮到船體非直舷、水下剖面形狀的瞬時變化以及砰擊等非線性因素，討論了大波幅斜浪規則波中非線性流體力的時域計算方法。
  7. 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。
  8. For newtonian fluid, the influence of the plate undulations, the reynolds number and the thickness of the film are shown by parameter studies ; for non - newtonian fluid, the shear - thinning coefficient on the film flow is shown by parameter studies

    在薄膜流動過程中，考慮波形板的輪廓形狀參數變化、流動中雷諾數的大小、薄膜厚度的變化以及非牛頓流體的剪切變稀系數對薄膜流動的流變特性影響。
  9. In order to understand the effect of alternating magnetic field on the dynamic performance of a disk - type magnetorheological ( mr ) fluid damper based on shear operation, the dynamic character of a flexible rotor supported on the disk - type mr fluid damper was experimentally studied under sinusoidal magnetic field

    摘要為了掌握交變磁場對基於剪切方式的盤型磁流變（ mr ）流體阻尼器動力特性的影響，試驗研究了正弦磁場下支承在盤型磁流變流體阻尼器上的柔性轉子系統的動力特性。
  10. Because accretion disks also contain flows with very high rates of shear, scientists proposed in the 1970s that the disks must also be highly turbulent

    因為吸積盤也包含具有非常高切變率的流體，科學家在1970年代倡議吸積盤必定非常混亂。
  11. At this time, the approximate mechanical model of devices has been put forward, which frequency is 70 mhz, then we analyzed the euler ? bernoulli equation, find that the frequency is determined by the resonator ’ s density thickness and length ; the free - free - beam 、 coupled beam 、 support beam 、 transducer have been designed ; the model was simulated and modal analyzed on the coventorware and were consistent with the designed parameter. the silicon surface microfabrication process was developed and emphatically introduced several key surface microfabrication technologies, and was simulated by coventorware

    本文通過分析歐拉-貝努立方程，得出濾波器的共振頻率主要由諧振梁的密度、厚度和長度決定，考慮切變形和轉動慣量的情況下，完成微機械諧振梁、支撐梁、驅動電容的設計;在coventorware軟體上進行模擬，分析結果與理論設計比較好地吻合;對微機械濾波器的加工工藝進行設計，給出器件的完整的工藝流程，重點介紹微機械表面加工工藝，並在coventorware上進行模擬。
  12. Based on the commonly used strip theory with the extension of taking into account the instantaneous variation of the wetted hull surface during the motion and its effects on the ship hydrodynamic characteristics, this dissertation mainly calculates the ship motions and loads in waves in time domain and elementarily investigates some nonlinear characteristic of ship motion and hydrodynamic coefficient. it is hoped that the research had an engineering value for the predication and evaluation of seakeeping performance in the concept ship design stage

    本文基於擴展的切片理論，計入船體運動時濕表面的變化及其對船體流體動力性能的影響，在時域內計算了船舶在波浪中的運動和載荷，並對船舶水動力系數及運動中的一些非線性因素進行了初步的探討，本文的研究對船舶設計階段的耐波性能評估具有工程實用價值。
  13. Rotating pipes system are often encountered in the rotary machinery of engineering applications. with the popularity of rotary machinery in industry, the characteristics of the fluid flow and heat transfer in the controlling pipe system, the transporting pipe system, and the cooling pipe system are the main factors to improve the efficiencies of the rotary machinery. meanwhile, when a man is in the aerocraft with a high rotating speed or in the rotating machine for training, the flow in the blood vessel of body will change evidently and so the study on the flow in the blood vessel also becomes the important research field in the aerial - physiology

    在旋轉狀態下，這些曲線管路系統中的流動和換熱特性將會發生什麼樣的變化，是對管路系統的性能以及旋轉裝置的運行安全至關重要的問題，也是管道流動中研究很少，又是迫切需要解決的課題；同時，這個課題還可以應用於生物流體力學：當人體處于作高速旋轉或曲線運動的飛行器或宇航飛行員訓練的旋轉裝置中，人體血管內血液流動將會發生什麼樣的變化，是航天生理學研究的重要課題。
  14. The er fluid we developed is quite suitable for research purpose, and it has a static yield stress of 3kpa at 3. 3kv / mm

    這種電流變流體在3 . 3kv mm的外加電場強度下，靜態剪切屈服應力可達3kpa 。
  15. They found that black holes have an extremely low shear viscosity ? smaller than any known fluid

    宋等人發現黑洞有極低的切變黏度，比任何已知的流體還低。
  16. Valves are control equipment in fluid pipelines. through adjusting valves, medium in the pipeline may get through or be cut off in pipeline. also, the flowing way, pressure and flux of medium can be controlled to protect pipeline and facility

    閥門是流體管路的控制裝置，其基本功能是接通或切斷管路介質的流通，改變介質的流動方向，調節介質的壓力和流量，保護管路和設備的正常運行。
  17. As a whole, efficiency of the chaotic mixing of shear - thinning fluids is worse than of newtonian fluids, but there are different reasons in the two - dimensional and the three - dimensional chaotic mixing in eham

    總體上偏心螺旋環流混合器中剪切變稀流體的混合效果不如牛頓流體，但是在二維和三維混沌混合中有不同的原因。
  18. Then the author proposed a quantitative method to investigate three - dimensional chaotic mixing and did the comparative studies of three - dimensional chaotic mixing in eham among newtonian fluids, viscoelastic fluids and shear - thinning fluids

    其中，提出定量表徵三維eham總體混合效果的方法，並對牛頓流體、粘彈性流體和剪切變稀流體的混合效果進行了比較。
  19. Abstract : the article introduces cement slurry rheological characteristics and the method of determining the main parameters for cement slurry rheological characteristics, and analyses the difference between the rotation type and funnel type of viscometers in measuring plastic viscosity and apparent viscosity of cement slurry, and then the limitation of the funnel type of viscometer is described. the difference between rigidity and yield value is pointed out. finally through analysis of cement slurry rheological characteristics, the cement slurry filling mechanism is proposed, and the main factors affecting cement slurry are studied

    文摘:介紹塑性流體水泥漿的流變性及確定水泥漿主要流變參數的一般方法；分析旋轉式粘度計與漏斗式粘度計在測定水泥漿塑性粘度、表觀粘度時的區別，說明漏斗式粘度計在使用上的局限性；針對粘聚力（動切力）的測定進行分析，認為粘聚力與動切力為不同的概念.通過對水泥漿流變性分析，提出水泥漿充填機理，並對影響水泥漿擴散的主要因素，即粘度影響水泥漿在節理裂隙中向前擴散的速度，動切力限制水泥漿擴散距離作了說明
  20. The working mode of rera is compound mode - shear - squeeze mode. rera is a breakthrough of er technology in transmission mechanics. the characteristics of rera involve a fast response speed, stepless regulation and computer controllability

    因此本文研究開發了一種新型的電流變傳動裝置，即波紋式電流變傳動機構，其流體工作模式是復合型的，即剪切一擠壓式。
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