the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx
a quality that differentiates between similar things
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
双语例句
We plan to change our method of investment by instituting land price differentials, issuing urban construction bonds and shares, and introducing foreign capital. 我们计划改变投资方法，实行土地差价，发行城市建设债券和股票，引进外资。
