稀释极限 meaning in English

attenuation limit
dilution limit

Effective dielectric response of ellipsoid composites in which the dielectric function of the grains have the form of ( the equation is abbreviated ) ) embedded in a host medium is investigated in dilute limit based on perturbative expansion method , and general expressions for the effective linear dielectric function and ( - 1 ) - order nonlinear susceptibility of the two - phase system are derived in this paper
摘要利用微扰展开法讨论了任意阶弱非线性椭球颗粒复合体系（假定颗粒组分的介电函数随场变化，表示为(方程式略) ）的有效介电响应，导出了稀释极限下两组分椭球颗粒体系的有效线性和有效( + 1 )次非线性系数的一般表示式。