业际化与网络相结合促使企业组织形式发生质变，出现了虚拟企业。
The combination of the industrial synthesis and the network promotes the essential changes of the enterprise forms and the virtual enterprises appear.
构建虚拟企业必须具备一定的内外部条件和运行网络平台。
However, building virtual enterprises must have certain conditions of exterior and interior and a network for operation.
设计虚拟企业跟踪评价指标体系，建立神经网络跟踪评价模型。
The paper designed tracing evaluation index system in virtual enterprise and established neural network trace evaluation model.
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