Suppose we were to graph a household's consumer spending as a function of cash-on-hand, which equals current income plus liquid assets, holding constant expected future income.

假设未来预期收入保持不变，画一个以家庭消费与库存现金的函数图---库存现金等于目前的收入加上流动资产。

youdao

It is the same thing as, in one variable calculus, when you take the anti-derivative of a function it is only defined up to adding the constant.

相当于在一元微积分中，取一个函数的不定积分，仅仅需要在结果后加一个常数。

youdao

So, horizontal planes have equations of a form z equals some constant, z=0 z=1 z=2 So, maybe the graph of my function will be some sort of plot out there.

水平面上的方程，都是z等于某个常数的形式，等等。，z，equals，zero，z，equals，one，，z，equals，two，，and，so，on。,函数的图像,在那里就是这样的表现。

youdao

So, first, if I point out when l equals 0, when we have an s orbital, what you see is that angular part of the wave function is equal to a constant.

首先，如果ｌ等于０,那就是ｓ轨道，你们可以看到,它波函数的角度部分是一个常数。

麻省理工公开课 - 化学原理课程节选

If you want to write a function that describes this line here, it's pressure as a function of volume related to each other with this constant.

如果要写出描述这条等温线的方程,它的压强和体积,就通过常数C相联系起来。

麻省理工公开课 - 热力学与动力学课程节选

n So the velocity is given by this product of the quantum number n Planck constant 2 pi mass of the electron time the radius of the orbit, which itself is a function of n.

速度是量子数,普朗克常数2π乘以轨道半径的值,它自身也是n的函数。

麻省理工公开课 - 固态化学导论课程节选