polyethylene imine

例句：

1. 1. This polymer has excellent mechanical properties and is widely used in various industries.
   这种聚合物具有优异的机械性能，广泛应用于各行各业。
2. 2. Polyethylene imine is a versatile material that can be used in the production of plastics, coatings, and otherproducts.
   聚乙烯亚胺是一种多功能材料，可用于生产塑料、涂料等产品。
3. 3.The polyethylene imine-based materials have unique properties that make them suitable for specific applications.
   基于聚乙烯亚胺的复合材料具有独特的性质，适用于特定的应用场合。