On the basis of the transformation of nonintegral folded-chain (NIF) crystals into integral folded-chain (IF) crystals, the growth processes of double lamellae and single layer lamellae is discussed.

根据非整数次折迭链晶向整数次折迭链晶的转变，讨论了双层片晶和单层片晶的生长过程。

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On the basis of the transformation of nonintegral folder-chain (NIF) crystals into integral folded-chain(IF) crystals, the growth processes of double lamellae and single layer lamellae is discussed.

根据非整数次折迭链晶向整数次折迭链晶的转变，讨论了双层片晶和单层片晶的生长过程。

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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。

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