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。

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An activity component can define a set of configuration properties.

一个活动组件可以定义一组配置属性。

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A first observation is that multiple process languages can be implemented on top of the same activity component framework.

首先，可以观察到的是在同一活动组件框架上可以实现多个过程语言。

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Essentially, it added an on-screen component that shows song requests and user activity on TVs via a Roku player (of course, the company has since gone on to offer other devices as well).

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While many of us see this activity as just the early stages of what will become a long-term, sustainable component of the New York economy, some veteran observers are already forecasting the collapse of another tech bubble.

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