Vernon used product life cycle explain foreign trade and investment but didn't give the inside reasons.
弗农只是用产品周期理论来解释国际贸易和投资的流向，却没有深入到其背后的原因。
A real options approach was applied to analyze optimal investment decision. A model that incorporated the product life cycle as well as market structure was introduced.
应用实物期权方法探讨投资决策问题，提出了一种同时考虑产品生命周期和市场结构的分析模型。
However, it is inevitable that the implementation of ERP projects is complex and high-risk because the investment of project is large and life cycle of the implementation is long.
但是，企业ERP项目的实施投入巨大、实施周期长，实施过程复杂，因此ERP项目的高风险性也就在所难免。
However, it is inevitable that the implementation of ERP projects is complex and high-risk because the investment of project is large and life cycle of the implementation is long.
但是，企业ERP项目的实施投入巨大、实施周期长，实施过程复杂，因此ERP项目的高风险性也就在所难免。
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