表面傳導系數 的英文怎麼說

中文拼音 [biǎomiànzhuàndǎoxìshǔ]
表面傳導系數 英文
surface film conductance
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 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...
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 表面 : surface; superficies; boundary; face; rind; sheet; skin; outside; appearance
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Based on analysis of geologic foundation record about pingzhuang basin, a lot of sino - foreign geothermal geology record and investigation of field geology, measuring of ground temperature in person and geo - chemical analysis of ascension spring, gushing water of fault, the fact that the anomaly of geothermal gradient of pingzhuang basin, which is in region of low geothermal gradient, is caused by redistribution of conduction - oriented geothermal heat flow which is result from upheaval and depression of basin foundation bed is pointed out. after the field of ground temperature is simulated under the background of conduction - oriented geothermal heat flow by means of ansys, the characteristic of ground temperature distribution of top surface of basin foundation bed ( yixian team ) is revealed. the sound condition of transmissibility fault and feeding water source, which are imperative in formation of the low - medium temperature geothermal system of convective type, is possessed in pingzhuang basin

    通過對平莊盆地基礎地質資料、國內外大量地熱地質資料的分析和野外地質調查、礦井實測地溫以及上升泉、斷層涌水的地球化學分析等工作基礎上，指出地處低地溫梯度背景區的平莊盆地地溫梯度異常是由於盆地基底隆起和坳陷引起傳導型大地熱流再分配所致；運用州sys數值模擬了大地熱流向地表傳導背景下的盆地地溫場，從而揭示了盆地基底（義縣組）頂界面地溫分佈特徵；闡明了盆地具有形成中低溫對流型地熱系統所必需的導水斷裂、補給水源等的良好條件，中低溫對流型地熱系統是地熱勘查的主要對象；圈定了平莊盆地北部朝陽溝?駱駝營子地熱勘查遠景區。
  2. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。
  3. In this dissertation, we firstly prove that any dirichlet problem is indeed equal to a voltages problem of networks. we give five solutions to dirichlet problem in two dimensions ; among these five solutions, we prove that the iteration solution and the solution of relaxations are exponential convergence, then we estimate their respective convergence rates ; secondly, we discuss random walks on general networks, prove that there is an one to one correspondence between networks and reversible ergodic markov chains ; thirdly, we give probabilistic interpretation of voltages for general networks : when a unit voltage is applied between a and b, making va = 1 and vb = 0, the voltage vx at any point x represents the probability that a walker starting from x will return to a before reaching b ; furthermore, we study the relationship between effective resistance and escape probability : starting at a, the probability that the walk reaches b before returning to a is the ratio of the effective conductance and the total conductance

    本文證明了任何邊值的dirichlet問題都可轉化為求解電路電壓的問題：給出了計算平面格點上dirichlet問題的5種方法：證明了迭代法和松馳法都是指數收斂的，並分別給出收斂速度的估計；討論了一般電路上的隨機徘徊，驗證了電路與可逆的遍歷markov鏈是一一對應的；給出了電路電壓的概率解釋：當把1伏電壓加於a ， b兩端，使得v _ a = 1 ， v _ b = 0時，則x點的電壓v _ x表示對應的markov鏈中，從x出發，到達b之前到達a的概率；進一步地，給出了逃離概率與有效電阻之間的關系：從a出發，在到達b之前到達a的概率為有效傳導率與通過a的總傳導率之比。
  4. The magnitude of the maximum value, as well as the time to reach such maximum value, varies with geometry and surface heat-transfer coefficient.

    最大值的及達到此最大值的時間均隨幾何形狀和表面熱傳導系數而變。
  5. Although a variety of techniques, such as addition of surface area, swirl flow devices, vibration of heated surface, vibration of fluid, are applied to enhance heat transfer, major improvements in heat transfer capabilities have been held back because of the low thermal conductivity of conventional heat transfer fluids

    隨著對熱交換設備換熱表面強化傳熱技術研究的深入，換熱工質的傳熱性能已成為影響熱交換設備高效緊湊性能的一個主要因素，低導熱系數的換熱工質已成為研究新一代高效冷卻技術的主要障礙。
  6. Thaw settlement cause negative friction. this paper base on the thought of " initiative cooling ", aim at three problems existing in common concrete pile used in frozen soil, a new type of pile is proposed to overcome the disadvantages of the classical pile used in frozen soil. pile body within active layer is fluted and refilled with porous materials such as gravels and ballasts, convection will be occur and then thermal exchange inside porous material in winter while only heat conduction exists in summer, as a result the soil around flutings will be cooled, so the top line of permafrost will be drive up

    本文基於「主動冷卻」地基的思想，以及針對凍土地區普通混凝土樁存在的三大問題，提出了一種新型樁的設計思路，運用數值模擬試驗手段對其冷卻機理與加固機理進行了系統研究，即在凍融活動層的深度范圍內，在混凝土樁身的表面刻槽，修築完時槽內填充碎石、塊石等多孔介質，通過外界大氣溫度的自然波動下多孔介質在冬季時存在的對流換熱機制，而在夏季只存在熱傳導，來達到主動冷卻樁周凍土和抬升凍土上限的目的。
  7. Thirdly, the conclusions of the two aspect applications are given as follows : the exploration of the application of the evaporation duct prediction to the flux relationship research and evaporation duct predicting shows that based on this predicting method and with microwave refractometer, as sensor, ( 1 ) the dimensionless gradient function of temperature, humidity and refractivity in the flux relationships can be determined with higher precision, ( 2 ) the limitations of conventional observations on the predicting accuracy for evaporation duct can be avoided and the precise prediction for evaporation duct can be obtained with the accurate measurement of refractivity profile within a few meters. the radar performance under given evaporation

    三、對兩個應用問題的討論表明：基於本文發展的蒸發波導預測理論，使用微波折射率儀為傳感器： （ 1 ）開展通量關系研究時，可以用於邊界層溫度、濕度和折射率無量綱梯度函數的精確測定和得到蒸發波導環境預測所需的偽折射率參數化函數關系； （ 2 ）預測蒸蒸發波導環境特性和傳播特性及其應用研究發波導環境時可以避免使用傳統氣海界面要素測量中存在的局限，並用折射率音d面不太高的精確測量結果精確預測蒸發波導環境。
  8. The development of mass transfer in the system of vapor - liquid - liquid three - phase distillation from trays was introduced, the effects of the hydrodynamic conditions e. g. vapor velocity and ratio of liquid to vapor loading and physical properties of liquid phase, including surface tension, interfacial tension, viscosity or dispersion viscosity, density, relative volatility etc. and the volume ratio of oil to water on mass transfer were discussed systematically, the influence of the second liquid on mass transfer efficiency was also investigated, a gnat deal of viewpoints and suggestions having been put forward in this paper are significant important for optimizing design of distillation tower

    摘要介紹了氣液液三相精餾塔板傳質性能研究的進展情況，討論了氣速、液氣比等操作條件，表面張力、界面張力、液體的粘度或分散粘度、密度和相對揮發度等物系性質以及油水體積比等多種參數對傳質效率的影響，探討了第二液相的存在對傳質的影響，文中的許多觀點獲和建議對于優化精餾塔的設計具有重要的指導意義。
  9. In view of results obtained in the work, the commonly 共同 made assumption 假定 of equality 均等 of heat transfer coefficients for both the bundle and its additional surface may lead to certain 確定 errors 誤差 in heat transfer calculations and discrepancies between the calculated values of heating surfaces area and later operational needs of steam generator

    在工作得到的結果，傳熱系數的做法為捆綁和它附加的表面在熱傳遞演算也許導致某些熱化表面的誤差值和蒸汽發電器之間的錯誤和差誤。
  10. Through analysis, the theoretical solution of the condensation heat transfer coefficient of horizontal tubes with annular fins is obtained. the theoretical results are compared with the experimental ones

    本文通過理論推導，獲得了水平環肋管外冷凝表面傳熱系數的理論計算公式，然後把理論值與實驗值進行了比較。
  11. In this system, mean velocity pipe is applied to transform the air velocity signal into pressure difference signal, and then the pressure difference signal is input into pressure difference transmitter to realize the transform of the pressure difference signal from non - electricity signal to electric current, and through the resistance in the corresponding sampling circuit the electric current is transformed into voltage signal ; the thermocouple is used as the primary element to realize the transform from temperature signal to the voltage signal ; under the control of communication agreement module, diversified voltage signal is transported into computer by way of a / d conversion module, and then the monitoring software compiled beforehand is transferred to deal with all the voltage signals relatively, the result of which is conveyed to relative interface to display

    該裝置具有三個特點：一是採用表面式測溫方法，有效地減少了元件的維護與損耗；二是採用工業控制計算機及信息就地採集、數據總線傳輸的方式，充分利用計算機和數據自動採集方面的技術，實現各種參數的在線測量，監測指標全面，能與dcs系統聯用，具有技術先進性和一定的前瞻性；三是採用顯示器配工業觸摸屏的顯示方式，為現場運行人員提供了簡單、易學、方便的操作模式。本裝置自2001年8月投入運行以來，有效地幫助、指導運行人員進行燃燒調整，對于鍋爐和機組的安全、經濟運行發揮了重要作用。
  12. Based on the transfer - matrix method, the general expressions of equivalent four - terminal network parameters of varying section torsional horn are derived, the relations between frequency equation and both the rotational velocity amplification and that of the surface tangential velocity of stepped type torsional ultrasonic horn with transitional section of cosine - like type are obtained

    摘要基於傳遞矩陣演算法，推導出了變截面桿扭轉振動時等效四端網路參量的一般表達式，研究了帶類餘弦過渡段階梯形變幅桿扭轉振動頻率方程與角速度放大倍數及外表面切向速度放大倍數等的關系。
  13. The demonstration of heat - transfer measuring techniques and prospect of infrared thermal mapping techniques, main parts and performance indexes of a infrared camera, functional blocks and implementation of infrared processing software, experimental facility and measuring system of the wind tunnel has been made. the model emittance was experimentally determined and the three methods correcting directional emittance were compared. those problems of the infinite - slab model thickness and constant wall heat rates hypothesis, the determination of adiabatic wall temperature were discussed in a 1 - d heat conduction analysis

    本文對紅外熱圖測熱技術與應用前景、紅外熱像儀主要部件與性能指標、紅外測熱數據處理軟體功能模塊與實現、風洞試驗設備與測量系統等進行了論述，測量了模型表面發射率並對發射率隨極角變化的三種修正方法進行了對比，對一維熱傳導分析中模型壁厚半無限假設、壁面熱流定常假設、絕熱壁溫選取等進行了探討。
  14. Accordring to basic concept and assumes essentially on the basic of sweden method of slices, be living below the maximum equilibrium state, the function expression about stability safety homogeneous slop is deduced, and the slope surface is consist of two lines and an arc, afterwards according to analysis theory of minimal value ruling on the basic of the maximum, genetic algorithm is applied to slove the dangerousest slide situation and radius and corresponding safely factor

    根據瑞典圓弧法的基本概念和基本假定，在極限平衡狀態下，推導了兩直線段均質斜坡穩定性安全系數函數表達式，然後根據極限分析理論的極小值原理，利用遺傳演算法，求出了邊坡穩定性安全系數極小值，並得到最危險滑動面的滑弧半徑和滑弧中心坐標。
  15. Compared with traditional air - conditioning, its advantages lie in thermal comfort energy efficiency free use of spacing and etc. this paper introduces the procedure and the result of the experiment of gas - heater radiant floor system and gshp radiant floor system and compares them with traditional air - conditioner. based on the analysis of the heat transfer of radiant floor, this paper uses the theory of heat transfer to establish a mathematical model and computes it with difference equation. the important factors inferred from the model such as floor surface temperature heat intensity composite heat transfer coefficient deviate from the experiment result in a small range of 20 % and fit the need of the practical use

    在分析了輻射地板傳熱機理的基礎上，文中利用熱傳導、大空間的自然對流換熱等傳熱學理論建立了輻射地板的傳熱模型，再採用有限差分方法對模型求解，所得有關輻射地板供冷熱性能的重要參數如地板表面平均溫度、熱流密度、地板表面復合換熱系數等與實測值相差在20以內，滿足工程使用要求；同時得出輻射地板盤管供水溫度是影響地板供冷熱性能的重要因素的結論。
  16. Based on the above deduction, the numerical solution of the condensation heat transfer coefficient outside horizontal tubes with annular fins is obtained

    在此基礎上，推導出水平環肋管在數值解法下的管外冷凝表面傳熱系數理論值的計算公式。
  17. Surface film conductance

    表面傳導系數
  18. Film cooling of the surface of a gas turbine blade was studied in a large - scale low - speed opening wind tunnel according to actual requirement of the design of aero - engine. the surface of a gas turbine blade was cooled by cylindrical holes in the experiment, with the hole number of fifteen in stator and eight in rotor

    應航空發動機設計的要求，在大尺寸低速葉柵傳熱風洞中分別對發動機渦輪導向葉片和動葉表面的氣膜冷卻特性進行了研究，具體研究在不同氣膜孔出流時，在不同主流雷諾數和吹風比情況下葉片表面局部換熱系數的分佈規律。
  19. According to the results, the cause of the error is explained, and the ways of improvement of condenser are put forward the theoretical solution of the condensation heat transfer coefficient is in excellent agreement with the experimental one

    本文所推導的冷凝表面傳熱系數的理論公式與實際情況基本相符，可應用於冷凝器的設計中。
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