Because optimization design make the task of calculation mechanics change to the active design and optimization from passive analysis and checkage, it is more difficult and more complicated.

因为结构优化设计从最初被动的分析校核上升为主动的设计与优化，所以结构优化设计也具有了更大的难度和复杂性。

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Thus, we can change from being passive to being active, transform pressure into motivation, and further enhance the export competing capabilities of our country's products.

这样，就可以变被动为主动，化压力为动力，进一步提高我国产品的出口竞争力。

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