When polyethylene glycols(PEG) has a reversible heating and cooling, its super molecule structue will have some change in macroscale of its properties called phase transition.

• 在对聚乙二醇(PEG)进行冷热循环处理时，其超分子结构会发生某种相的转变，从而改变宏观性质而具有特殊的蓄热调温性能。