dissipate更有点扩散的意思,有梯度差别的.比如说热量从高温处慢慢扩散到低温处,能量慢慢扩散到四周,直到消失.
disperse 有点太阳把水汽驱散这样的感觉.无序的扩散.
我也将不好,抄两端词典的解释给你看看.
1.Main Entry:dis·si·pate
1 a :to break up and drive off (as a crowd) b :to cause to spread thin or scatter and gradually vanish
2 :to be extravagant or dissolute in the pursuit of pleasure; especially :to drink to excess
2.Main Entry:dis·perse
1 a :to cause to break up b :to cause to become spread widely c :to cause to evaporate or vanish
2 :to spread or distribute from a fixed or constant source:as a archaic :disseminate b :to subject (as light) to dispersion c :to distribute (as fine particles) more or less evenly throughout a medium
intransitive verb
1 :to break up in random fashion
2 a :to become dispersed b :dissipate,vanish