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。
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。
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。
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。
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。
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。
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。
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。
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