根据作者的表述，图3a是衰减曲线，图3b是经过拉普拉斯反演后的弛豫谱。

According to the author's statement, Figure 3a is the attenuation curve, and Figure 3b is the relaxation spectrum after Laplace inversion. So what is the physical meaning of the ordinate in Figure 3a and Figure 3b? Can it be expressed in the same coordinates? Please check the ordinates of the two pictures. The physical meaning of T2 should be given at the first occurrence in the text.

According to the author, Figure 3a is the attenuation curve, and Figure 3b is the relaxation spectrum after The La Plath inverse. So what is the physical significance of Figure 3a and Figure 3b ordinates? Can it be represented by the same coordinates? Please check the ordinates of the two pictures. The physical significance of T2 should be given when it first appears in this article.

According to the author's description, FIG. 3a is the attenuation curve, and Fig. 3b is the relaxation spectrum after Laplace inversion. So what's the physical meaning of the ordinates in figures 3a and 3b? Can we use the same coordinates? Please check the ordinates of the two pictures. The physical meaning of T2 should be given when it first appears.