polyurethane rubber

• 聚氨酯橡胶

polyurethane rubber的用法和样例：

例句

1. The ball is a hollow aluminum sphere covered with a thick layer of polyurethane rubber.
   这个球是空心球体，表面有一层厚厚的聚氨酯橡胶。
2. Silicones and urethanes are by far the leading sealant products followed by latex and butyl rubber.
   到目前为止密封剂产品主要是硅树脂和聚氨酯橡胶，其次是乳胶和丁基橡胶。