differential pay差别工资differentialadj.差别的；特定的；微分的n.差别；工资差额；差动齿轮；[数]微分differential -algebraic systems微分-代数系统differential evolution algorithms差异演化算法differentially value-equivalent可微分值等价differential equation with delays时滞微分方程differential thermal gas analysis差热气体分析differential size frequency curve微分粒度频率曲线differential drive pinion carrier差速器主动小齿轮座架Differential mean value questions微分中值问题differential transmitting linkage差动式传动机构differential measuring instrument差动式测量仪表