考虑到住在集群式城镇的种种弊端，为什么13世纪的人们会搬到这些拥挤的地方呢？
Given all the disadvantages of living in aggregated towns, why did people in the thirteenth century move into these closely packed quarters?
小城镇往往依托产业集群而兴旺，并以经济集聚和社会服务功能，解决城乡间产业、就业及收入结构长期失衡问题。
The town's function of economic cluster and social service can solve the unbalance problem of industry, employment and income between town and country in a long run.
论文研究了产业集群与城镇形态基础理论，并指出二者之间具有相互促进的关系。
The paper studied the basic theories or Industrial Cluster and City Morphology. And it points out that the relation between them is stimulative.
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