The parameters optimization of the stamping drawing process of the outer panel of trunk lid is a multifactor and multiobjective problem. The robust optimal design was adopted for this characteristic.

行李箱盖外板冲压拉延成形的工艺参数优化是一个多因素多目标问题，针对该问题的特点，采用本文的稳健优化设计方法。

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This aquatic period could explain the evolution of the elephant's most characteristic feature its trunk.

ECONOMIST: The elephant and the mermaid