unit crown

• 比例凸度

unit crown的用法和样例：

例句

1. The results show that the model adapting sinusoidal curve to forecast the roller crown can obviously reduce the double-rib wave and thus improve the flat-ness of the plate.
   经过优化和实际应用，采用正弦曲线来预测轧辊原始凸度可以明显减轻二肋浪，提高板带平直度。