有两种类型的驰豫：纵向驰豫，静磁场中质子定向排列所需的时间T1；
There are two types of relaxation: longitudinal relaxation, which is the time (T1) needed to align protons in a static magnetic field;
在线性驰豫应变假设下给出了应变超晶格纵向原子间距的几何模型。
A model of linear strain relaxation is proposed to obtain the interatomic longitudinal spacings of the strained superlattice.
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