n.流动；不断的变化；转变；飞跑；消失，微积分；流数术

The concept of fluxion is central to Newton's calculus.
牛顿微积分的核心概念是流数。
In physics, fluxion often refers to the rate of change over time.
在物理学中，流数通常指的是随时间变化的速率。
The fluxion of velocity with respect to time is known as acceleration.
速度对时间的流数被称为加速度。
Fluxions can be represented using Leibniz's notation for derivatives.
流数可以用莱布尼茨的导数符号来表示。
The study of fluxions led to the development of calculus by Isaac Newton.
对流数的研究导致了艾萨克·牛顿发展微积分。
In engineering, fluxions are used to model and analyze systems.
在工程学中，流数被用来建模和分析系统。
The fluxion of temperature with respect to altitude is known as the lapse rate.
温度随高度变化的流数被称为衰减率。
The use of fluxions in economics has increased in recent years.
近年来，在经济学中使用流数有所增加。
The fluxion of a function at a point is equal to the slope of its tangent line.
函数在一点的流数等于其切线的斜率。
Fluxions are also known as differentials or derivatives.
流数也被称为微分或导数。