分子通过界面时需克服界面自由能，界面两侧的浓度不一致。
Molecules are damped to pass interface by interfacial free energy, interfacial fr.
在双层片晶界面上的H键降低了表面自由能，这是形成双层片晶的主要原因。
H bonds on facing folded chain crystal surfaces lead to a decrease of surface free energy and this fact is a main reason for the formation of double lamellae.
在双层片晶界面上的H键降低了表面自由能，这是形成双层片晶的主要原因。
H bonds on facing folded chain crystal surfaces leda to a decrease of surface free energy and this fact is a main reason for the formation of double lamellae.
在双层片晶界面上的H键降低了表面自由能，这是形成双层片晶的主要原因。
H bonds on facing folded chain crystal surfaces leda to a decrease of surface free energy and this fact is a main reason for the formation of double lamellae.
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