Roller is one of the major process equipment for the flow forming. It has a significant effect to dimensional precision and apparent quality of the flow formed part.
旋轮是旋压加工中的关键工艺装备之一，对旋压工件的尺寸精度和表观质量起着至关重要的作用。
Accordingly, countermeasures are proposed to improve the apparent quality of the weld pipe.
提出了有效改善焊管表面质量的措施。
Extracting feature parameters of apparent quality, area of egg image is used to evaluating egg weight, the correlation coefficient is 0.9922.
文中选择鸡蛋图像面积作为特征参数来衡量鸡蛋重量，由拟合分析得出图像面积和蛋重二者的相关性系数达到0.9922。
Moreover, the low molecular weight and higher temperature are favorable to reduce the melt viscosity, to increase the critical shear rate and to improve the apparent quality of extrudates.
较低的分子量和较高的温度有利于提高临界剪切速率，改善挤出物外观质量和降低熔体粘度。
Moreover, the low molecular weight and higher temperature are favorable to reduce the melt viscosity, to increase the critical shear rate and to improve the apparent quality of extrudates.
较低的分子量和较高的温度有利于提高临界剪切速率，改善挤出物外观质量和降低熔体粘度。
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