So-called firm cluster externalities refer to externalities determined by the geographical characteristics and industrial characteristics of the cluster of firms.
所谓企业集群外部性指的是，由企业集群的地理特征和产业特征所决定的外部性。
We found that the factors which affect the industrial specialization and diversification are factor endowment, demand preferences, economies of scale, externalities, transport costs, and so on.
研究发现，影响产业多样化、专业化的主要因素有要素禀赋、需求偏好、规模经济、外部性、运输成本等。
应用推荐