在恒星核这样的极端环境下，振动变得更加剧烈，甚至能回到恒星表面。
In that extreme environment they actually become more intense and can return to the surface.
而硅酸盐夹杂物的表面能只为氧化铝的10 ~(- 8)，具备在钢液中均质形核的条件。
The interfacial energy of silicates, however, is only 10-8 times of that of alumina and, thus, the silicates have the precondition of homogenous nucleation in the steel.
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