polyethylene

聚乙烯

Most shopping bags are made of thin, flexible polyethylene.

大部分购物袋都是用轻薄有弹性的聚乙烯制成的。

聚乙烯制的限定用法

The pipes are wrapped in a polyethylene sheet for insulation.

这些管线外面包了一层聚乙烯膜来隔绝。