流散系數 的英文怎麼說

中文拼音 [liúsǎnxìshǔ]
流散系數 英文
spreading coefficient
  • 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...
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. It further discusses the operation mechanism of the system of agrotechnical diffusion and indicates that the essence of technical diffusion is information diffusion, and the system depends on the course which information flows from the fountainhead to the receivers. and it analyzed the ingredients which influence the information flowing in the system. intruding shannon ’ s information

    進一步探討了農業技術擴散系統的運行機制，並指出，技術擴散實質是信息的傳播，是建立在信息從信息源到接收者之間的流動過程，對技術推廣系統中影響信息流動的因素進行分析，引入shannon的信息熵計算方法，對信息接受者的信息接收含量進行測度，通過對所得的數值進行比較，運用定量與定性分析相結合的方法證明技術推廣活動的效率。
  2. The origins of dispersion error are analyzed ; effects of initial velocity dispersion, ballistic coefficient dispersion, drift coefficient dispersion, range wind & cross wind dispersion on the ballistic dispersion are discussed

    分析了散布誤差的起源，討論了初速散布、射角散布、彈道系數散布、偏流散布、縱橫風散布對密集度的影響。
  3. The third model was designed to investigate atom diffusion at contacting point. fe was sintered at 500, 550 > 600, 650 > 700 under bpec and radiation heating. the test results of image processing indicated that the average pore size took on wavelike with temperature under bpec heating

    脈沖大電流加熱條件下，其它條件相同時，分別在800 、 900的溫度武漢理土大學碩士學位論文下擴散連接cu絲和ni絲，結果表明接觸線處cu和ni的擴散系數隨溫度的升高而增大。
  4. Abstract : according to the continuative condition of the tangential fields on the slot aperture which is the inclined narrow - slot on the broadwall of a sectoral waveguide, the moment method is used to calculate the magnetic current coefficient and distribution. then the scattering field, the scattering parameter and the equivalent impedance are obtained. leting only the te11 dominant mode propagates in the waveguide, the scattering parameters and the normalized equivalent series impedance in the x - band are computed. the basis disigned the slot antenna and the slot array is offered

    文摘:根據縫隙口面切向場的連續條件，採用解析數值法矩量法，對扇面波導寬壁上窄的斜縫進行了計算，解得了磁流系數及其分佈，並得到散射場、等效散射參量及等效阻抗等重要參數.假定波導中僅有te11主模傳輸，在x波段計算了散射參量和歸一化等效串聯阻抗，給出計算結果，為縫隙天線和縫隙陣列設計提供了依據
  5. A transfer model is established, which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains. the model has simulated surface heat flux, surface temperature, temperature profiles, height of mixture layer and so on. and the differences between urban area, suburban area and rural area have been compared. this model mainly depends on the parameters below : surface albedo, surface roughness coefficient, moisture available coefficient of soil, thermal capacity and thermal diffusion coefficient of errain, cloudage. the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day. parameters used in this model aim at beijing city, and the time is at the beginning of september. to other cities, or other time, the parameters should be adjusted accordingly. in addition, being adjusted, the model can also be used for other homogeneous and inhomogeneous terrains

    模式主要依賴于以下參數和物理量：地面反照率下墊面粗糙度土壤的可含水量下墊面的熱容量和熱擴散系數雲量等參數。結果表明，本模式能合理地模擬不同地表熱量平衡地表氣溫混合層高度湍流交換系數湍流動能位溫廓線等，以及它們的日變化。該模式所取參數主要針對北京市，時間為九月初，對于其他城市，參數應作相應的調整。
  6. In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data

    本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好
  7. The effects of the fabrication conditions on the crystal structure, grain size, micromorphology and electrochemical performance of these materials have been studied in depth. the reaction mechanism of the low - heating solid - state reaction method has also been investigated. in addition, a novel electrochemical method ( rpg method ) based on the concept of " ratio of potentio - galvano - charge capacity " has been for the first time developed to determine the diffusion coefficient of lithium - ion within insertion - host materials on the basis of the spherical diffusion model

    本論文較系統地考察了低熱固相反應法合成鋰離子電池正極材料的可行性問題，研究了工藝條件對材料的晶體結構、晶粒尺寸、微觀形貌及電化學性能等的影響，探討了低熱固相反應的機理，並通過引進「恆壓-恆流充電容量比」的概念，給出了一種測定鋰離子嵌入脫出固相擴散系數的新方法。
  8. Xquery is designed to work just as well accessing legacy data stores such as relational and object databases, and the resulting abstraction and complexity gives it a very different feel from that of popular xml repositories, which are often just collections of xml as plain files or in simple hash databases

    Xquery的設計考慮了訪問關系數據庫和對象數據庫這類遺留數據存儲，結果其抽象性和復雜性使其完全不同於流行的xml存儲庫，後者常常是純文本或者簡單的散列數據庫形式的xml集合。
  9. The fact that wave velocity in quasi - saturated soil is equal to that of fully saturated soil could not be calculated by effective fluid compressibility or explained by unwell - distributed saturation. we account for this in a new reasonable way which was based on kuster scattering effect analysis

    （ 8 ）根據kuster散射波理論，計算了飽和度大於85的準飽和土體的彈性波速，其結果與試驗非常吻合；但是，通常所用的等效孔隙流體壓縮系數的方法所計算的結果與實驗結果差別很大，對此，筆者給予了一定的解釋。
  10. ( 3 ) an efficient discovery method for useful data items is proposed. at first the definition of useful data items in distributed dsms is given, then the discovery method of single input data streams is extended to multiple environment and get the algorithm, which can solve the problem efficiently

    給出了分散式數據流系統中有效數據的概念，將單輸入數據流的數據識別技術推廣到多輸入數據流環境，給出了一種有效數據識別演算法，該演算法較好地解決了分散式數據流應用中的有效數據識別這一技術問題。
  11. Based on the establishment of the mathematical model of the water - level controlling system, the boundary control equation of the stable domain of the continuous system and discrete system are found respectively, and the characteristic of stable domain of the two systems is analysed

    其目的是維持前池水位穩定，提高機組單位流量出力，最大限度利用來水，從而提高電站的經濟效益。在建立水位調節模式下調節系統數學模型基礎之上，對連續、離散系統進行了穩定分析。
  12. The contents of this paper include the following several aspects : ( 1 ) a model of the fractures leakage is built through counting and analyzing the wealthy geological records of hae field, and a model of the fracture water transporting is also built according to the fracture water condition of its recharge and its runoff and its discharge in hae field ; ( 2 ) this paper studies the chemical behavior and the migration parameters of the elenent sr2 + in ground water in hae field, the main contents include : the presence form of the element sr in ground water is analyzed by way of the rmodynamics ; the absorption mechanism that granite and sand stone absorbs sr element is analyzed based on theory and experiment test the diffusion parameters of the element sr in water and in granite and in sand stone are researched with laboratory experiment test ; the partition coefficient of sand stone and granite to sr is tested by the batch way

    其研究內容包括以下幾個方面： （ 1 ）通過對我國hae預選處置場豐富地質資料的大量統計和分析，建立了該處置場的基巖裂隙滲透模型。再根據hae預選處置場基巖裂隙水的補給、徑流、排泄條件及水位動態特徵，建立了預選處置場基巖裂隙水水運動模型。 （ 2 ）對高毒性鍶元素在我國hae預選處置場地下水中的化學行為和遷移參數進行系統的研究，其中主要包括運用熱力學方法分析了鍶元素在地下水中的存在形態，利用理論分析與實驗測試相結合的方法分析了花崗巖和砂巖對核素鍶的吸附機制，採用室內實驗裝置研究了核素鍶在地下水中的擴散參數以及在花崗巖和砂巖中的本徵擴散參數，採用靜態批式法研究了鍶在砂巖和花崗巖中的分配系數。
  13. In the suspended sediment transport model, the method of shear stress is adopted to determine the source function in the suspended sediment diffusion equation. through a series numerical experiments and statistical analyses of observed field data, a local coefficient, which can reflect the bottom material and consolidation, is introduced into the classic critical erosion velocity of the sediment

    懸沙輸運模型利用切應力方法來確定對流擴散方程中的泥沙源函數，其中的臨界起動速度利用經典的泥沙起動流速公式前面增加一個局地系數得到，這個系數能反映河床底質結構及固結程度，通過系列數值試驗和實測資料的統計分析確定。
  14. The effect of gas rates, liquid flow - rates, downcomer width, weir height and the addition of surface active agent on the liquid mean residence time, t, effective diffusion coefficient, de, and froth height, hf were studied. results obtained showed that for two systems, the t in the downcomer of ctst plate is 20 - 50 % smaller than that of fl valve plate, and the de is 40 - 70 % smaller than that of fl valve plate

    通過對氣速、液體流量、降液管寬度、堰高和表面活性劑加入的影響進行分析得出下面結論：在相同的操作條件下，對于兩種物系， ctst塔板降液管的液體停留時間比f1浮閥塔板的約小20 50 ，有效擴散系數比f1浮閥塔板的小40 70 ，泡沫高度低110 150mm 。
  15. Based on the observation data such as coads and soda, the main climatological features of the tropical indian ocean and relationships of sea surface temperature ( sst ), heat budget with ocean dynamics and thermodynamics processes are analyzed ; the seasonal and interannual variability of the tropical indian ocean are well simulated using a ocean general circulation model ; based on the thermal equation and model output data, the variation mechanism of sst and heat budget are investigated in the tropical indian ocean ; besides, the effect of seasonal variation of wind stress, ekman pumping and horizontal diffusivity on the ocean current and heat budget are studied, using both ideal model and complex model

    本文根據coads 、 soda等實際觀測資料，較全面的分析了熱帶印度洋主要的氣候特點，並研究了海表面溫度（ sst ） 、熱收支與海洋動力、熱力過程的聯系；利用全球海洋環流模式較好地模擬出熱帶印度洋的季節和年際變化；基於熱力學方程和海洋環流模式輸出結果，探討了熱帶印度洋sst和北印度洋熱量收支的季節和年際變化機制，進一步揭示了海洋動力過程在北印度洋熱平衡中的重要作用；在此基礎上，利用理想化的數值試驗與數值模擬結果相結合的方式，證實了風應力的季節變化和ekman抽吸，以及水平熱量擴散系數對北印度洋海洋環流和熱收支的影響。
  16. And takes the method of passing electricity in wet environment to carry on the reinforcement corrosion acceleration to the reinforced concrete, and uses the linear polarization method to carry on the test to the polarized resistance and corrosion current density of the steel bar flowed through by electricity at different time, analyzing the rule of the change of the reinforcement corrosion parameters, and test the chloride ion diffusion coefficient to evaluate the impermeability of the concrete

    本文以不同水灰比、不同含氣量、不同引氣劑的鋼筋混凝土為研究對象，採用濕通電法對鋼筋混凝土進行加速銹蝕，同時採用線性極化法對不同通電時間的極化電阻和腐蝕電流密度進行測試，分析銹蝕參數的變化規律，並通過測定cl -擴散系數來評價其抗滲性。
  17. The samples were welded at 750, 800, 850 and 900. the diffusion coefficients ( d ) of cu and ni at interface increased with the increase of welding temperature. and comparing with radiation heating, atom diffusion velocity at interface quickened

    其它條件相同時，分別在750 、 800 、 850 、 900的溫度下採用脈沖大電流加熱連接cu和ni片狀材料，結果表明接觸面處cu和ni的擴散系數隨溫度升高而增大。
  18. Theoretical research on the rotational dispersion coefficient of fiber in the turbulent shear flow of fiber suspension

    纖維懸浮剪切湍流中纖維旋轉擴散系數的理論研究
  19. The result indicates that when the air content of the concrete changes from 1 to 4 percent, the polarized resistance of the identical flow electricity time increases along with the increment of the air content, the corrosion current density reduces along with the increment of air content, the chloride ion diffusion coefficient reduces with the increment of air content ; when air content changes from 4 to 6 percent, the rule of the change of the polarized resistance and corrosion current density happens to be the opposite, the diffusion coefficient of the chloride ion increases along with the increment of air content ; when the air content is 4 percent, the rust - resisting property of concrete is best, and so is the impermeability of the concrete

    試驗結果表明，混凝土的含氣量在1 . 9 % ~ 4 . 2 %變化時，極化電阻隨含氣量的增大而增大，腐蝕電流密度隨含氣量的增大而減小， cl -擴散系數隨含氣量的增大而減小;當含氣量在4 . 2 % ~ 6 . 4 %變化時，極化電阻、腐蝕電流密度和cl -擴散系數的變化規律則相反;當含氣量為4 . 2 %時，抗鋼筋銹蝕性能最佳，抗滲性最好。 cl -擴散系數與鋼筋銹蝕參數在一定程度上有著良好的相關性，抗滲性的結果較好地反映了混凝土中鋼筋銹蝕的程度，可以用cl -擴散系數評價引氣混凝土的抗鋼筋銹蝕性能。
  20. Thus, non - negative property is suggested as the criterion of stability. furthef, diffusion coefficient is replaced by an artificial one in the finite difference equation to simulate the entropy generation can improve the accuracy of the numerical analysis

    在盡可能滿足對流擴散過程數值格式中的輸運性或守恆性及穩定性的同時，以擴散熵產模擬為原則的偽擴散系數可有效地提高數值模擬的模擬性，為數值計算中擴散系數的修正提供了一種有效的手段。
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