With the development of high density central district of our country, new situation and features crop up, which pose new challenges to street greenbelt design of central district.
随着我国高密度城市中心区的飞速发展，城市景观出现了新的面貌和特征，这对城市中心区街道绿地景观规划设计提出了新的要求。
The density of developed areas in the mature urbanized district is also calculated.
计算城市化成熟区中建成区用地面积密度值。
There are many colleges and research institutes in the higher education cultural district, where the population density is high and the impact of the environmental pollution is wide.
高教文化区是一个城市的特定区域，区域聚集多所大中专院校和科研院所，人口密度大，环境污染影响范围广。
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