Parameters are fitted to vapor pressure, density and mean ionic activity coefficient data.
参数由拟合蒸汽压、密度和离子平均活度系数数据获得。
Development in activity coefficient method for estimations and predictions of V-L-E were briefly reviewed.
本文简要评述了汽-液相平衡中估算和预测活度系数的方法的进展。
How to estimate the activity coefficient of a chemical species is a problem which we must deal with carefully.
如何合理地估算活度系数是水环境化学数值模拟工作中必须慎重考虑的问题。
Measurement method of activity coefficient of Associated and non-associated electrolyte solution was discussed.
对缔合式、 非缔合式电解质溶液活度系数的各种测定方法进行了归纳和总结。
Meanwhile, a thermodynamic model activity coefficient was used to correlate the solubility data, the average rel…
同时，采用热力学模型关联实验数据，结果令人满意。
This method is as rigorous in theory as that based on the equation of state, and as simple in computation as the activity coefficient method.
此法兼有状态方程法理论严密和活度系数法计算简便的优点。
Which established foundation for the breakthrough and mechanism research on the activity coefficient of the new type of welding gas in the world .
为全世界的新型焊割气在活度值上的突破及机理研究奠定了基础。
An equation for the activity coefficient expressed by solubility parameters and taking excess entropy into consideration is presented in the payer.
并且提出一个考虑了过量熵的、用溶度参数表示的活度系数方程。
The possibility of unique azeotropy or polyazeotropy in a liquid mixture can be predicted using activity coefficient models in terms of boiling point calculation.
在存在共沸点的条件下，利用活度系数关联式， 通过泡点计算求出共沸条件。
Activity coefficient is an important parameter in aqueous speciation models, and plays an important role in describing the mass transfer between water and rock quantitatively.
活度系数是形态分布模型中的关键性参数之一，对定量描述水、岩之间的元素迁移具有重要意义。
Model UNIFAC is one of the most widely used model in reckoning the component activity coefficient in nonelectrolyte solution. It is also used in engineering designing calculation.
UN ifac模型目前已成为推算非电解质溶液中组分活度系数应用最广泛的模型，并且用于工程设计计算。
The finite diffusion model of CME was established, the activity coefficient ratio, the diffusion coefficient correction factor and the kinetic parameter were introduced and evaluated.
建立了CME的有限扩散理论模型，引入了活度系数比、扩散系数校正因子及动力学参数等。
At the same time the difference of the solubility to the isomeric compound Anthracene and Phenanthrene in the different solvents is discussed by the aspect of the activity coefficient.
同时，还对蒽、菲同分异构体在不同溶剂中的溶解度的差异，从活度系数方面进行了探讨。
The author reviews the activity coefficient formula employed by some famous international speciation calculation programs and compares their advantages, disadvantages and their valid range.
本文总结介绍了国外几个著名的形态分布计算软件包中所采用的活度系数计算公式，并比较了各自的优缺点及其适用范围。
So the condition of phase separation for multicomponent solutions is that activity coefficient of some components have a increasation steeply at phase interface with partly miscible solution.
为此，本文认为具有部分互溶组分活度系数的突变可做为多组元溶液分相的判据。
A local composition activity coefficient model was proposed and applied to calculate the wax precipitation from crude oil. The calculation result was compared with that of the regular solution model.
将局部组成活度系数模型用于复杂石油流体中石蜡沉淀量的计算，并与正规溶液理论模型进行了比较。
The concrete fusion process, such as activity level measurement, coefficient combination methods, consistency verification and decomposition depth are discussed in detail.
具体讨论了变换系数活跃度测量、变换系数融合方法、变换系数验证、帧变换分解深度等问题。
Useful conversion coefficient is obtained by test, and therefore axial distribution of cobalt target specific activity is calculated.
通过试验，获得了实用转换系数，据此，可以求出每节钴靶的比活度。
It is shown that the sticking coefficient of oxygen on Ag-Pd alloy surface is slightly less than that on Ag surface, which implies that the alloying of Ag and Pd decreases the surface activity.
与纯银相比，氧在银钯合金表面吸附具有较小的粘附系数和较大的偶极矩。
The variance curve of activity of SS (synthetic direction) conformed with that of SS (cleavage direction), and they had a significant positive correlation coefficient.
在果实的整个发育过程中，SS合成与分解方向的活性变化趋势比较相似。
SOD group was significantly better than U74389G group in coefficient of lung, SOD activity and apoptosis index, (P <0.01, P <0.05).
SOD组在缓解肺系数、降低SOD活性及抑制凋亡方面优于U74389G组（P <0.01，P <0.05）；
The accuracy of the product activity cost will certainly decrease in the combination after which the amount of the final cost drivers is smaller than the rank of the coefficient matrix.
导致最终成本动因个数小于系数矩阵秩的合并必然损失产品作业成本的精确性。
The mass coefficient was brought forward to assess the activity factor of original coal gangue.
引入质量系数法评定原状煤矸石经热活化后辅助胶凝性能的大小。
The apparent permeability coefficient (Papp) of drugs through small intestine, is one of important factors to evaluate drugs' biological activity.
药物的小肠表面透皮系数是表征药物活性的重要指标。
The apparent permeability coefficient (Papp) of drugs through small intestine, is one of important factors to evaluate drugs' biological activity.
药物的小肠表面透皮系数是表征药物活性的重要指标。
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