Aiming at solving those problems, this paper define structural criteria according to the features of the ontology structure which guide the partition process in order to improve the partition quality.

针对这些问题，文章根据本体特征定义结构标准，指导分块过程，改善分块及映射的质量，并重新设计了基于结构标准的本体分块映射的方法。

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Then, a set of optimization criteria and algorithms are set up based on frequency sensitivity and evolutionary structural optimization methods.

而后结合频率灵敏度，基于渐进结构优化方法，建立了一套优化准则和算法。

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In the specific case of power tools, polyamides are used in housings where in combination with part designs they play a critical role in meeting structural and protective criteria.

在电动工具的具体应用中，聚酰胺是通常用于罩壳的原料，当与零部件设计相结合时，聚酰胺原料在满足结构及防护标准方面扮演了一个非常关键的角色。

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