结合理论联系实际
Combine theory with practice
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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。
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.
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