确定了超过冷条件下晶体组织的骤然细化起因于大过冷度下的高形核率。
The sudden refinement of crystal structure is determined by the high nucleation rate under large undercooling.
通过高斯分布函数描述形核质点密度随温度的分布关系，在给定过冷度时对分布函数求积分可得该时刻的形核密度。
Gauss distribution function was employed to describe the relation between the density of nucleation sites and the temperature and was integrated to get the grain density at a given undercooling.
就无机水合盐的过冷机理及非均匀形核的动力学机理进行了探讨，加入成核剂是降低过冷度的有效措施。
This paper discusses the nucleating mechanisms of the salt hydrates and comes to the conclusion that adding suitable nucleating agents reduces significantly the degree of supercooling.
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