We're just going to go through it and execute it a little bit. And then we'll move on and talk about how we'd actually make some of these measurements of delta H and compare

对吧？我们会讲完它并,实际应用一下，然后我们会,继续讲一下实际上我们,是怎样测量△H并与

麻省理工公开课 - 热力学与动力学课程节选

When you vary time a little bit and ask, "How does R change?"

当你把时间改变一个微元,然后问,"位矢 R 会怎样变化"

耶鲁公开课 - 基础物理课程节选

How about this guy? I draw A, then I draw another A.

如果这样做会怎样呢,我先画矢量 A,然后再画一个矢量 A

耶鲁公开课 - 基础物理课程节选