产业集聚带来外部性，对一个产业获取竞争优势具有积极作用。
The external force brought about by the industry centralization has an active influence on wining the superiority for an industry.
产业集聚带来外部性，对一个产业获取竞争优势具有积极作用。
The external force brought about by the industry centralization has an active influence on wining the superiority for an industry.
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