This paper proposes a conceptual model with information overload as an intervening variable and some operational variables to conduct sample investigation and statistical analysis.

本文提出了一个以信息过载为中介变量的概念模型，并设置操作变量选择样本进行调查和统计分析。

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The operational layer controls also variable speed signs, lane closing symbols and variable message signs.

业务层还控制着可变速度标识，车道结束标志和许多可变信息标志。

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Variable represents a period of operational memory, the memory can also be that the variable is a symbol of that.

变量代表了一段可操作的内存，也可以认为变量是内存的符号化表示。

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