Activity coefficient Number expressing the ratio of a substance's chemical activity to its molar concentration.

化学术语，活度系数指物质的化学活度对其浓度之比。

Activity coefficient Number expressing the ratio of a substance's chemical activity to its molar concentration .

化学术语，活度系数指物质的化学活度对其浓度之比。

In this paper, the evaporation loss rate of Ti and Al in TiAl alloy melt was calculated with the aid of activity coefficient of Ti, Al.

作者利用计算得到的钛铝合金中钛、铝的活度系数，计算了钛铝合金熔体中钛、铝元素的挥发损失速率。

Application of Extended Debye Hückel Equation to calculation of ionic activity coefficient for dry white wine was presented in this paper.

论述广义德拜-休克尔方程在准确计算干白葡萄酒的离子活度时的应用。