The experiments show that the prediction precision of the size of ultrafine-ferrite is more than 90% and the precision of the content of ultrafine-ferrite is more than 91%.

• 通过实例验证表明，超细晶铁素体晶粒尺寸的预测精度达90%25以上，超细晶铁素体晶粒质量分数预测精度达91%25以上。