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。
The changes in chemical and phase composition of spinel in the grain and matrix of specimens after high temperature treatment have also been investigated.
分析了试样经高温处理后基质和颗粒中的尖晶石相组成及化学成分的变化规律。
In particular, incorporation of bioactive ceramics into polymer matrix is assumed to mimic the composition of natural bone extracellular matrix(ECM), thus can enhance cell growth and response.
针对骨组织的特点，将生物活性陶瓷材料引入聚合物基体形成复合结构，能有效地模拟骨的化学成分，以提高其生物活性；
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