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高分子材料的发展历史不足百年,与传统材料比较,因其具有低价位和通用性特征,而获得空前范围的应用,在20世纪其产量迅速增加,2000年,全
The history of the development of polymer materials is less than one hundred years. Compared with the traditional materials, due to its low price and versatility, the unprecedented development of polymer materials has led to a rapid increase in output in the 20th century. In 2000,