It takes design experiment samples by orthogonal plan method and regards the SDV values which come from soft trying die as goal of optimizing.

其中由正交法设计得到实验样本，由软试模提取模具的SDV值，将其作为优化目标。

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Then from three general sides, the comparations of orthogonal experiment and classical statistical experiment design have been made.

并且，从三个大方向对正交试验和经典统计试验设计之间的差异性进行了比较。

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Favorable preparation conditions of the catalyst were investigated by orthogonal design experiment and influences of different preparation factors on the test results discussed.

通过正交设计探索催化剂较优的制备条件，分析各制备因素对实验结果的影响机理。

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