gra.di.ent
n.Abbr. grad.（名词）缩写 grad.A rate of inclination; a slope.倾斜率；坡度An ascending or descending part; an incline.斜面：向上或向下倾斜的部分；斜坡Physics The rate at which a physical quantity, such as temperature or pressure, changes relative to change in a given variable, especially distance.【物理学】 梯度：一个物理量，如温度或压力，相对于另一给定可变量（尤指距离）的变化的变化率Mathematics A vector having coordinate components that are the partial derivatives of a function with respect to its variables.【数学】 斜率：一个矢量，其坐标分量是一个函数对其变量的偏微分Biology A series of progressively increasing or decreasing differences in the growth rate, metabolism, or physiological activity of a cell, an organ, or an organism.【生物学】 生理梯度：细胞，器官或生物体在生长速度，新陈代谢或生理活动上的一系列逐渐地增加或减少的变化
来源：Perhaps grade 可能为 grade-ient -ient as in quotient 如在 quotient
