Mo-Fe and trimetal catalyst;Mo-Co-Fe) and concentration of them had been gotten in the terms of Least Square Method by self-written C program.

• 由于催化剂浓度与其加氢裂化-抑焦活性之间符合二次曲线关系,因此本文利用最小二乘法拟合了反映它们之间关系的二次曲线方程,并计算出催化活性最大处的浓度。