α粒子是从天然放射性蜕变得到的带正电的氦核.Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.粒子 —— 氦核 —— 正通过试管被抛出, 从而在试管中形成人造迷雾.Alpha particles -- helium nuclei -- were being hurled through the tube...
Diffusion probability density function in fractals is described by stable distribution.物质在分形结构中的扩散密度分布函数属于稳定分布.Such as rivers, mountains and other natural objects are statistically fractals.河流 、 山脉等自然界中的分形都是统计意义上的分形.With...