Large temperature and concentration differences taking place in CVD process lead to natural convection and concentration diffusion which interact with forced convection and complex reactor geometries.
在CVD过程中，存在着大的温度差和浓度差，将引发自然对流和浓度扩散，它们又与气体的强迫流动以及反应器的几何尺寸和形状相互影响。
The defining aspect of Yemen is the diffusion of power rather than the concentration of it.
对也门的形势起着决定性作用的，与其说是权力的集中，倒不如说是权力的分散。
The fluoride concentration in the trapping solution is determined directly in the diffusion dish, after neutralization and buffering with a fluoride-sensitive electrode.
采用氟化物敏感电极，经中和和缓冲，在扩散盘中可直接测得捕集溶液中的氟化物浓度。
This modeling system has the same conditions as Gaussian diffusion model, and can calculate any concentration isoline's rigor time space location and specific points location.
所有公式使用条件与高斯扩散模型相同，可用于直接求取任意浓度等值线精确的时、空位置及其特征点位置。
Then this paper studied the effect of diffusion coefficient on concentration distribution and the conditions of substitution with numerical dispersion for physical diffusion.
通过将该半解析解与忽略扩散的数值解进行对比分析，讨论了数值弥散代替物理扩散的条件。
It is found that the maximum concentration often occurs near source through intensive vertical diffusion, and the values of concentration decrease with the distance downwind rather rapidly.
发现由于垂直扩散较强，最大浓度常于近源处发生，且向下风方浓度衰减较快。
The pressure equation is solved by mixed finite element method, while the concentration equation is solved by finite difference-streamline diffusion finite element method, that is, using SD f.
提出了解不可压缩两相混溶驱动问题的一种新的数值方法，压力方程用混合有限元求解，浓度方程用差分流线扩散方法求解。
Decreasing hydraulic conductivity and diffusion coefficient may delay the increasing rate of the concentration ratio at the base of a GCL.
结果表明，减小渗透系数和扩散系数可以有效减缓衬垫底部浓度比的增加速度。
On the other hand, ionic diffusion may cause deviation of defect concentration from its stoichiometric equilibrium value.
另一方面，离子扩散可能导致缺陷浓度在平衡位置的偏离。
The ratio of the square of certain concentration gas diffusion depth and diffusion time is constant when it diffuses and reacts through the solids bed.
一定浓度的气体通过固体颗粒层扩散-反应时，其扩散深度的平方与扩散时间的比值为常数。
With increase of heating temperature and duration of heating time, the depth and concentration of phosphorous-enriched layer in uphill diffusion increases continuously.
随着提高加热温度和延长保温时间，“上坡扩散”的富磷层深度和浓度将不断增加。
Besides the influence of temperature on specific heat of mixture, considered is also that of diffusion flow due to concentration discrepancies, thus making the theoretical model more exact.
除考虑温度对混合气比热的影响外，还考虑了由于浓度差异产生的扩散流动对混合气比热的影响，从而使理论模型进一步精确化。
The free chloride concentration distributing in concrete of simulant chloride environment is analyzed, that is chloride diffusion behavior.
分析了模拟氯盐环境中混凝土内部的自由氯离子浓度分布规律，即氯离子的扩散行为。
The minimum magnetic field intensity needed to induce significant effect on cathodic limiting diffusion current density decreased with increasing ferric ion concentration.
引起极限扩散电流密度明显增加的临界磁场强度随三价铁离子浓度增加而减小。
Then, the concentration under different wind diffusion condition are analysized by using ground pollution mode so that the ratio of contribution to the total pollution limit is obtained.
之后采用近地面尘降模型，计算了这类污染源在不同气象层结下的扩散状况，得出其污染浓度对大气环保浓度的分担率。
Fifthly, based on the consideration of sediment diffusion because of sediment particle interaction, the equation of vertical distribution of sediment concentration is derived.
五是在考虑泥沙颗粒碰撞扩散的基础上，推导了泥沙浓度沿垂线的分布规律。
The movement of a solute down its concentration gradient is called diffusion.
溶质沿着浓度梯度溶解的运动过程被称作分子扩散运动。
Through studying the relation between logarithm of the concentration and power of the penetration distance, the kinetics type of diffusion along dislocation has been found.
通过研究钨浓度的对数值与扩散深度幂指数的关系，得到了钨动态扩散动力学的类型。
Financial cluster is the process including financial resources concentration and diffusion.
金融集聚是金融资源既集中又扩散的过程。
The boundary layer is characterized by a concentration gradient of the oxidized ion. Diffusion of the reducing agent ion through the boundary layer controls the REDOX reaction.
边界层的特征在于被氧化离子的浓度梯度，还原剂离子的扩散通过边界层控制了氧化还原反应。
Conclusion: the concentration of carbopol 934 is the major influence on transdermal diffusion of the drug.
结论：卡泊姆934的浓度为影响透皮扩散的主要因素。
Establishes the physical model and mathematical model of fire smoke diffusion in underground railway. Simulates the temperature field and concentration distribution of fire smoke using CFD method.
建立了地铁火灾中烟气运动的物理模型和数学模型，采用CFD方法模拟了地铁火灾时的温度场和烟气浓度分布。
Based on the model test, the instantaneous concentration and velocity images in different temperatures and scales are put forwarded. And the range, shape and trend of diffusion are acquired.
本文结合模型试验，得出了不同温升及变率下表面横向浮射流的瞬时浓度场和流速场，进而分析得出随着温度及变率的变化浓度场的扩散范围、形态特点和趋势。
Comparison result show that on the isothermal medium atmosphere condition, the numerical simulation result of smoke diffusion and smoke concentration is accurate.
结果表明在等温中性的大气条件下，该模式对烟幕的扩散及浓度计算准确。
A new generation atmosphere diffusion model (ADMS model) and Regulatory model were used to forecast the average concentration values of H2S in a complex terrain of Chongqing.
应用新一代的大气扩散模型(adms模型)预测重庆某个复杂地形区域的H2S地面浓度，并分别将其与导则模型的预测值与实际监测值进行了对比统计分析。
In this paper, the method and some skills of drawing isogram and leeward axial graph of concentration about diffusion of contaminant in environmental forecasting are presented.
本文介绍了在大气环境影响预测分析中污染物诉散的浓度等值线图和下风向轴线浓度图的作图方法和某些技巧。
Methods to determine the inhibition activity of Elsinochrome a with the paper diffusion experiment. To determine the inhibitory concentration of Elsinochrome a by the double dilution method.
方法采用纸片扩散法实验测定痂囊腔菌素a的抑菌活性，二倍稀释法测定痂囊腔菌素a抑菌浓度。
Regardless of hysteresis of air system, the main factor that influences dynamic response of fuel cell is diffusion concentration polarization, which restricts the change rate of stack current.
不考虑空气系统的时间滞后，影响电池动态响应时间的主要因素为扩散浓差极化，它限制了电流的变化率。
Regardless of hysteresis of air system, the main factor that influences dynamic response of fuel cell is diffusion concentration polarization, which restricts the change rate of stack current.
不考虑空气系统的时间滞后，影响电池动态响应时间的主要因素为扩散浓差极化，它限制了电流的变化率。
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