可问在任何瞬时车速如何的意义是什么，我们又如何解决？

But what does it mean to ask how fast it is going at any instant, and how can we find out?

youdao

可问在任何瞬时车速如何的意义是什么，我们又如何解决？

But what does it mean to ask how fast it is going at any instant, and how can we find out?

youdao