Plastic material is defined as a synthetic or natural macromolecularcompound, PET is one of the.
塑胶原料定义为是一种以合成的或天然的高分子化合物，PET是其中的一种。
2
The full name of the polyurethane is the poly - urethane, which is a general designation of the macromolecularcompound containing repeated amino acid ester groups.
聚氨酯全称为聚氨基甲酸酯，是主链上含有重复氨基甲酸酯基团的大分子化合物的统称。
3
Polymeric aluminum chloride (PAC) is an inorganic macromolecularcompound which is good at cleaning water.