The mechanical status of nutted rod in drawing pipe with short mandrel rod is analyzed, the analysis basis for the dimensions design of nutted rod offered.

文章分析了短芯棒材时杆的受力，并对杆的寸设计提供了分析的依据。

The strain of the proeutectoid ferrite in hypoeutectoid steel drawing was measured and analyzed by quantitative metallography.

采金相法分析计算了亚共析钢变形中先共析铁素体应变。