The theories of the product composition, life cycle and Bostons matrix are followed. Theory study and investigate study are adopted and quantitative analysis is combined with qualitative analysis.
本文遵循产品组合理论、产品生命周期理论及波士顿矩阵理论，采用了理论联系实际、定量分析与定性分析相结合的方法。
Study methods to be used in the dissertation primarily involve life cycle theory guidance, game theory analysis method, radar navigation location, and SWOT matrix analysis.
本论文中所运用的研究方法主要涉及到生命周期学的理论指导、博弈论分析方法、雷达导航定位及SWOT矩阵分析。
The main research tools: the analysis of PEST external factors, Michael Porter 's Five factors Model, Life cycle analyses, and SWOT matrix.
主要分析方法：PEST外部因素分析法、波特五种力量模型、生命周期分析法、SWOT矩阵分析法。
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