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 roll差压辊differential head不等压头differential feed差动进给differential ring微分环differential gage压差计differential trap差热式阻汽器differential duty差别关税differential rent级差地租,差额地租Differential flux微分通量differential case差动齿轮箱,差速器箱,分速器箱