differential cam差分凸轮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 surge tank差动式调压塔,差动式倒水箱differential entrapment差异聚集differential phase test相移失真试验differential laser gyro差动激光陀螺differential excitation差励,差动激磁differential sputtering差动溅射differential adsorption鉴别吸附differential polynomial微分多项式differential band brake差动带式制动器differential L-system微分L-system