differential

名词 differential:

1. the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx
   同义词：derived function, derivative, differential coefficient, first derivative
2. a quality that differentiates between similar things
3. a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves
   同义词：differential gear

形容词 differential:

1. relating to or showing a difference
2. involving or containing one or more derivatives

1. An instrument that in a painless and noninvasive manner uses the differential transmission and reflection of ultrasonic waves to create a detailed visual image of the brain.
   超声波心动描记器一种用来显示详细的大脑图象的仪器，利用超声波发送和反射的差异来测试并无伤无痛
2. Maximum price differential old new crops6% but protein content similar.
   新旧作物差价最高达6％, 但所含蛋白成份一样。

dif.fer.en.tial

adj.（形容词）
Of, relating to, or showing a difference.
差别的：差别的、关于或显出差别的
Constituting or making a difference; distinctive.
区别的：构成或制造差异；显著
Dependent on or making use of a specific difference or distinction.
特异的：取决于或利用专门的特征或特性的
Mathematics Of or relating to differentiation.
【数学】 微分的：微分的、与微分学有关的
Involving differences in speed or direction of motion.
差动的：涉及速度或运动方向不同
n.（名词）
Mathematics
【数学】
An infinitesimal increment in a variable.
变量无限小的增量
The product of the derivative of a function containing one variable multiplied by the increment of the independent variable.
微分：用独立变量乘以含有一个度量的函数，然后对其求导所得的结果
Differential gear.
差动齿轮
A difference in wage rate or in price.
工资级差：工资或价格上的差异

【引伸】
dif.feren.tially
adv.（副词）