As a guide element of urban expansion and the urban structure framework, road traffic has a complicated relation with spatial form evolution of old cities.
作为城市拓展导向要素以及城市结构骨架的道路交通，与旧城空间形态演变之间存在复杂的关系。
And there is different urban spatial structure form because of different form of urban road network.
不同的城市路网形式下有不同的城市空间结构形态。
And there is different urban spatial structure form because of different form of urban road network.
不同的城市路网形式下有不同的城市空间结构形态。
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