You then can a multi-group either diffusionequation or solve these types of equations and more rigorously.
然后你有一个多群的或者是扩散等式,或者更严厉地解决这些等式。
2
I just wanted to remind you, just to clarify what happened at the end, we got the diffusionequation from two bits of information.
我仅仅是想让你们想起来，仅仅是想讲明上次课结束时说了什么，我们从两方面得到了扩散方程。
3
Let me now try and introduce the Boltzmann equation because it basically gives us a much deeper appreciation than diffusion theory can in terms of what's going on.