Wingtip slots,where the outer primary feathers of birds split and spread vertically,are regarded as an evolved favorable......

采用全３维刚塑性有限元法对热带粗轧机组平辊立轧非稳态过程进行了分析和比较，所得到的轧件形状、轧制力及轧制力矩与文献的实验结果......