Product life cycle: the course of a product's sales and profits over its lifetime. It involves five distinct stages: product development, introduction, growth, maturity, and decline.

产品生命周期是指产品随销售量与利润的变化从进入市场到退出市场的过程。它主要包括产品开发期、介绍期、成长期、成熟期与衰退期五个阶段。

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How is this engagement different at different points in the product development and introduction journey?

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He has facilitated the introduction, development and implementation of fifteen undergraduate and postgraduate degree programmes in Peace and Conflict Studies, Peacebuilding and Conflict Resolution at African universities in 10 countries, including the establishment of four specialist peace and conflict management centres.

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Its introduction led to the development of mechanical calculators across Europe.

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