The dynamic expression of isothermal growth at first order approach of Exponential Increase Model, presented on the basis of the Sandwich Model, is the same as classical isothermal pinning growth law.

• 在"三明治"模型基础上提出的指数增长模型在一级近似情况下解出的等温生长动力学关系式与传统的钉扎生长律相一致；