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生命周期是系统工程的概念，在工业领域里，生命周期可以从环境影响、能源消耗和资源占用等角度对不同的技术进行比较。用生命周期是一种更加高效的、整体性的管理模式，用生命周期对环境影响进行系统的评价，可以帮助企业降低成本，改进企业形象，从而获得竞争优势。 1什
The life cycle is the concept of systems engineering where life cycles compare different technologies from the point of view of environmental impact, energy consumption and resource use. Life cycle is a more efficient and holistic management mode. The systematic evaluation of environmental impact by life cycle can help enterprises to reduce costs, improve corporate image and gain competitive advantage. 1 what