对定向断裂复合材料的结构、功能进行了设计和分析，以求达到最优效果。

The best effect is achieved through the analysis and design of structure and function.

youdao

对定向断裂复合材料的结构、功能进行了设计和分析，以求达到最优效果。

The best effect is achieved through the analysis and design of structure and function.

youdao