polyvinylamine

例句：

1. 1.This polyvinyl chloride sheet is strong and durable.
   这种聚乙烯氯乙烯板很坚固耐用。
2. 2. Polyvinyl acetate is widely used in the production of plastic products.
   聚乙烯乙酸广泛用于塑料产品的生产。
3. 3. The polyvinyl alcohol solution was used to make a waterproof coating.
   聚乙烯醇溶液被用来制作防水涂层。