建立了高速公路绕城出入口的双向交通模型。
A two way traffic model of freeway entrance around city was established.
随着绕城高速公路的建设，国内大城市高速走廊效应日益显著。
With the quickly construction of highway around city, the highway corridor was more and more obviously.
随着绕城高速公路的建设，国内大城市高速走廊效应日益显著。
With the quickly construction of highway around city, the highway corridor was more and more obviously.
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