Well, the first thing you do is you write an equation.

嗯，第一点你要做的就是写一个方程。

麻省理工公开课 - 固态化学导论课程节选

He was trying to describe electrons, but the theory said there are two roots in the quadratic equation and the second root is mathematically as interesting as the first one.

他当时只是想去描述电子,但是数学理论告诉我们,二次方程有两个根,而第二个根在数学上和第一个根一样有趣

耶鲁公开课 - 基础物理课程节选

c We know it's very specific for light because in this equation is c, the speed of light. So any time you go to use this equation, if you're trying to use it for an electron, just ask yourself first, does an electron travel at the speed of light?

我们知道它只对光适用是因为在这个方程里有,光速，所以下次你们用这个方程前，如果你们要把它用到一个电子上，先问问你自己，电子的运动速度是光速吗？

麻省理工公开课 - 化学原理课程节选

It tells me that the best response to S2 is the ?1 that solves this equation, that solves this first order condition.

我们得出S2的最佳对策是?1,?1是这个方程的解,它满足一阶条件

耶鲁公开课 - 博弈论课程节选

b Let me just first write it down, the Van der Waals equation of state.

有两个参数，a和，如果a和b等于0的话。

麻省理工公开课 - 热力学与动力学课程节选

You realize it's very subtle, because the very first thing in that equation, which is m, has not yet been defined.

你会觉得这很微妙,因为方程里最基本的量 也就是 m,还没有人给它下定义

耶鲁公开课 - 基础物理课程节选

When we first introduced the Schrodinger equation, what I told you was think of psi as being some representation of what an electron is.

当我们第一次介绍，薛定谔方程的时候，我说你们，可以,把psi看做是，电子位置的代表。

麻省理工公开课 - 化学原理课程节选