图4. 平均半径为\bar{R}的微粒尺寸对数正态分布^[46]

Fig.4. Log-normal particle size distribution with a mean particle radius \bar{R} (Particles with radius R<R^* are continuously dissolving in the matrix. In the Langer and Schwartz approach, only the hatched area with particle radius R>R^* contributes to the mean particle radius {\bar{R}}_{\mathrm{L}\mathrm{S}}. \bar{R} is the mean radius for the full log-normal distribution, {\bar{R}}_{\mathrm{L}\mathrm{S}} is the mean radius of the stable particles (R>R^*), f(R) is the particle size distribution and f_a(R^*) is the density of the particles with the critical nucleation size)^[46]