每个企业都会有一个标准产业代码(SIC)(现为北美产业分类系统，简称NAICS)，用来确定各自属于哪个产业部门。
Companies were all assigned a numerical Standard Industrial Classification (SIC) code (now North American industry Classification System, or NAICS) identifying which industry sector they fit in to.
产业集群中的技术标准联盟可以从不同角度分类。
The Technical Standards Union in industrial clusters can be classified from different perspectives.
产业集群中的技术标准联盟可以从不同角度分类。
The Technical Standards Union in industrial clusters can be classified from different perspectives.
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