Based on these experiments, simple and multiple regression and correlation analysis show that the values of ccv, Erichsen and expanding ratio are strongly related to some material properties.

• 通过对大量 试验数据的一元和多元的回归和相关分析表明，板材的扩孔率，杯突 值和锥杯比与基本性能参数有显著相关性，并提出了一系列典型的回 归方法。