concentration distribution 中文意思是什麼

concentration distribution 解釋
濃度分佈
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  • distribution : n 1 分配，分發，配給；分配裝置[系統]；配給品；配給量；【經濟學】配給方法，配給過程；分紅；【法律...
  1. Firstly, simulate flow field of rear smoke channel, plot velocity magnitude and ash concentration distribution in section of entry of heat pipe air preheater, compare with data which were measured in guiyang power station, verify simulation to be reasonable and right. secondly, simulate all kinds of factors which affect flow field ' s uniformity such as length, thickness, location of diffluent board, ash concentration, ash diameter, and so on, find the chiefly factors. thirdly, install guide board in curve channel in rear smoke channel, then simulate its " flow field, plot velocity magnitude and ash concentration distribution

    在此基礎上模擬在冬夏兩季不同情況下，不同流速對熱管空氣預熱器壁面溫度的影響；然後對影響整個流場分佈的各種因素：包括分流板長度、厚度、偏離中心流道位置的偏離度、飛灰濃度、飛灰粒徑等因素進行數值模擬；最後提出在分流煙道轉彎處加裝導流板，並模擬加裝導流板后的流場分佈，得到下級空氣預熱器出口、熱管空氣預熱器進口處的斷面速度場分佈、濃度場分佈，以論證加裝導流板能達到流場均勻化的作用。
  2. In the model the film thickness in the passage was obtained at first using two phase flow theory ; then, similar analysis solution of concentration distribution of the pollutant in liquid phase and biofilm was obtained through mass component equation of pollutant in gas - liquid phases combined with the biochemical kinetic equation of mass transfer in biofilm and dismission of oxygen limited ; at last, the distribution of pollutant along the filter height and the waste gas purification efficiency were obtained

    該模型首先運用兩相流理論獲得了通道內液膜厚度，然後通過污染物在氣相、液相的質量組分方程，結合生物膜內的傳質與不?慮氧限制的生化反應動力學方程，獲得了污染物在液相和生物膜中濃度分佈的近似分析解，最終得到污染物在氣相中沿塔高的濃度分佈及廢氣凈化效率。
  3. Optimization of and modeling of concentration distribution of the solution obtained by leaching of natural sodium nitrate ores in the sunning process

    多級鹽田灘曬硝酸鈉礦浸取液時濃度分佈模型及優化
  4. Compared with measured data, this equation can describe the sediment concentration distribution better both in main flow region and near - bottom region

    與實測資料對比表明，該公式能更好地描述包含主流區與近底流區在內的泥沙含量分佈規律。
  5. It is mainly by analyzing the features of sediment concentration distribution in vertical in this paper, and then the problems of effect of headwork gates on sediment prevention, relation between distribution of sediment deposition in irrigated areas and its treatment and utilization, estimating the influence of withdrawing water and sediment on channel deposition and erosion in lower yellow river, and treatment and utilization of the sediment entered into canals are discussed

    本文主要從分析計算含沙量沿垂線分佈特點，探討渠首防沙的作用，分析灌區泥沙淤積分佈特性與泥沙處理利用的關系，分析計算引水引沙對黃河下遊河道沖淤影響及入渠泥沙的處理利用等問題。
  6. Three experimental models were constructed, on the basis of the distribution and diffuse of the main production dust source. the experiments of dust transport and concentration distribution were done for many times, then show that the air velocity and dust distribution are the key factors which control dust distribution of the area nearby dust source

    根據礦井主要生產性塵源的分佈及發塵特徵，構建了3種實驗模型進行粉塵運移和濃度分佈實驗.結果表明，風速和塵源是決定塵源附近區域粉塵分佈的關鍵因素.圖8 ，表2 ，參3
  7. The experimental study suggests that ofm reactor should provide high efficient injection dispersion performance with good controllability on the mixing intensity. so it should also satisfy the special requirement of the concentration distribution in the injection area for processes such as flocculation

    實驗研究表明：振蕩流混合反應器能夠實現高效的注入分散過程，而且可以精確控制混合的強度，完全可以滿足絮凝等反應過程對注入區濃度場的特殊要求。
  8. The microstructure morphology, the concentration, the infrared transmittance, and the x - ray rocking curves measured showed that a long single crystal part and axial steadily distributed zone of the concentration existed in the as - grown crystals. the radial concentration distribution has relatively high uniformity

    通過觀察生長態晶體中的微觀組織形貌，並測量晶體軸向和徑向上不同位置處的成分、紅外透過率和x射線回擺曲線，發現晶內有較長的單晶段和軸向成分穩定區。
  9. By measuring goaf gas concentration distribution in 3205 working face of taopinggou coal mine, we initially identified gas concentration distribution rules in coaf of room and pillar working face, therefore provided scientific basis to prevent and cure gas accidents of goaf in such working face

    摘要通過對桃坪溝煤礦3205回採工作面采空區瓦斯濃度分佈的實際測定，初步查明了房柱式回採工作面采空區瓦斯濃度的分佈規律，為今後此類工作面采空區瓦斯防治、防止采空區瓦斯事故的發生提供了科學依據。
  10. Experimental investigation shows that methanol engine cyclic variations mainly depend on the length of ignition delay and the proper mixture stratified concentration distribution in cylinder

    試驗結果表明，甲醇發動機的燃燒循環變動主要取決于著火延遲期的長短和缸內混合氣層狀濃度分佈是否合理。
  11. Reducing ignition delay and the ideal mixture stratified concentration distribution near the spark plug gap and the combustion chamber can reduce methanol engine combustion cyclic variations, and modify engine performances

    縮短著火延遲期，或在火花塞跳火區域及燃燒室內獲得理想的混合氣層狀濃度分佈均可降低甲醇發動機燃燒循環變動，使發動機性能得以改善。
  12. Abstract : in this article, starting from solute s transport a nd diffusion equati on, aiming at the saturation state of liquid in homogeneous soil of impermeable stratum and on the condition that lots of saturated solute ( e. g. nutriment ) on t op of the soil maintain diffusion, a strict mathematical deduction is carried ou t, and the analytical solution of solute s concentration distribution in homogeneous s o il is given

    文摘:從溶質輸移擴散方程出發，針對強透水層上均質土壤的液體飽和狀態，在頂層含有大量飽和溶質（如養分等）維持著滲透擴散的條件下，進行嚴密的數學推證，給出均質土壤中溶質濃度分佈的解析解。
  13. By introducing the diffusion caused by sediment colliding, the diffusion theory is revised, and the equation for sediment concentration distribution is derived from theory analysis

    進而在引入顆粒碰撞擴散的基礎上，對泥沙顆粒擴散理論進行修正，從而在理論上得到了挾沙水流泥沙含量分佈規律的公式。
  14. Abstract : a tube reactor mixed by an axial continuous flow and four side jets as the dispersed flow is studied. the concentration distribution of the dispers ed flow was measured by means of the laser light scattering. the different flow patterns revealed the special construction of concentration distributions in relation with the velocity ratio of side flow and axial flow

    文摘:研究了圓管反應器中四束側向對撞射流與軸向流形成的混合流動.應用激光粒子散射成像測量了側向分散相在混合流中的濃度場分佈，得到了不同的濃度分布圖形隨側向流與軸向流速比關系，揭示了內在有規律的獨特的濃度分佈結構
  15. A new method of calculating the concentration distribution of radio - nuclides was proposed, in which the effect of gravity settlement, rain washing and the decay of the radioactive species re considered

    利用傾斜煙團模式，考慮實際過程中核素粒子的重力沉降、雨洗作用以及放射性衰變等因素的影響，提出一種迅速估算放射性核素擴散濃度的方法。
  16. Results indicate that species concentration distribution varies horizontally : when at a distance from the fire origin they show a 2 - layer distribution, suitable for applying 2 layer zone model ; and in the vicinity of the fire origin they show a gradual distribution, requiring the field model or multi - layer model for evaluation

    結果發現，煙氣成分的分佈沿著水平方向呈現不同的特點，在遠離火源的位置呈上下兩層分佈，符合兩層區域模型，而在離火源較近位置則遞變分佈，則須用場模型或者多層區域模型評估。
  17. Then by using the excel software, we get the figures of the velocity profile and pollution concentration distribution of different sections, and get the ventilation efficencies of the three ventilation forms. as view from the efficiency of the draining pollution, a desired ventilation is regarded as the up - inlet and down - outlet on the same side after compairing the three ventilation efficiency. the trend of the velocity profile and the pollution concentration distribution both are basically identical with the practice, and the numerical results of the ventilation efficency accord with the ones studied by prof

    從排污效果的角度上來看，分析得出這幾種方式下較好的送排風方式是同側上送下排方式。從得到的流場、濃度場分佈的趨勢來看與實際大體一致，計算的通風效率與已經有的實驗值大體相吻合，說明本文所採用的數學模型合理，計算方法基本可靠。
  18. Numerical results show that the bubble concentration distribution can be predicted by using the two - way coupling of the fluid and the bubble motion, and adding the wall lift force into the bubble motion equation, and the fluid velocity, turbulence intensity and shear stresses modified by the bubble motions can also be revealed

    數值模擬結果表明，通過加入壁面升力和採用雙向耦合方法，可以較準確地預測氣泡濃度分佈和揭示氣泡流動對流體湍流結構的影響。
  19. Two models are applied to the hongzehu lake water system and according to the features of the flow field and concentration distribution along the rivers and in the lake, the transportation tendency of the pollutants is analyzed

    根據流場和濃度場幾個特徵時刻的分佈特點，明確了污染物的遷移變化趨勢，為水環境容量的計算和評估提供了科學依據。
  20. The motion characteristics of the suspended particles were obtained by statistical analysis, including vertical concentration distribution, mean velocity profile, turbulent intensity, velocity correlation, and the probability density distribution of the velocity fluctuations. attempt has also been made to interpret the turbulent characteristics in terms of particle properties and turbulence structure

    對不同容重、不同粒徑的顆粒在不同水流條件下的垂線濃度分佈、平均速度和脈動強度分佈、相關函數及脈動速度的概率密度分佈等進行了全面系統的統計分析，得到的中文摘要主要成果如下：
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