Delta v is going to be negative. w is going to be negative. Sorry, I got it backwards again.

这样就对外界做了功,这时候ΔV是正的。

麻省理工公开课 - 热力学与动力学课程节选

v The weight, w, and v, these are the two vectors we've seen here.

重量是w和价值，这是我们看过的向量的两个值。

麻省理工公开课 - 计算机科学及编程导论课程节选

Why is that? Because w and v are constant.

为什么？因为w和v是常数。

麻省理工公开课 - 计算机科学及编程导论课程节选