This factor has been dubbed "the second derivative", or the rate of change of the rate of change.
这一因素被称为是“二阶导数”，或者是变化率的变化率。
The effect of different zero crossing wavelengths on determination of mixed colorants in food under the same divisor factor in derivative ratio spectrum were discussed.
探讨比值导数波谱法中相同除数因子下的不同零交点波长对食品混合色素检测的影响。
The second derivative curve of the gravity field can be used as filtering factor so as to improve resolution.
为了提高分辨率，可采用重力场的二次导数曲线作滤波因子。
There is a power law relation between the modificatory factor and the time derivative of the period.
从统计上得到修正因子与周期变率的幂律关系。
The result indicates that the derivative of the Angle between the fault and the bedding surface is the major control factor on the development of fracture pore space associated with fault.
结果表明，断层面与层面的夹角变化率是控制断层相关裂隙空间的主控因素。
The factor of the mixed partial derivative term controls the grid orthogonality. The other two factors of second order partial derivative terms control the grid spacing.
结果表明 ：方程中混合偏导数项系数具有控制网格正交性的作用；
The factor of the mixed partial derivative term controls the grid orthogonality. The other two factors of second order partial derivative terms control the grid spacing.
结果表明 ：方程中混合偏导数项系数具有控制网格正交性的作用；
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