通用塑料高性能化是当前及今后较长一段时间内高分子材料科学与工程领域的重要的研究课题。
Properties improvement of general plastics is one of the important research fields of polymer materials science and engineering at present and in the coming long period of times.
聚乳酸及其共聚物可望成为2 1世纪的通用绿色高分子，其单体制备方法及聚合方法的改进成为当前研究的热点。
Poly (lactic acid) and its copolymers are a potential general green polymer in 21 century, and their monomer preparation and polymerization methods have become an investigative hotspot nowadays.
将少量相对高分子量的高密度聚乙烯(HDPE)加入到相对低分子量的通用级HDPE中，在复合应力场作用下挤出制成管材。
A small amount of high molecular weight HDPE was added into relative low molecular weight HDPE under compound stress field to extrude pipe.
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