n.聚乙烯
Polyethylene is an excellent barrier to water vapor. 聚乙烯保水蒸汽的性能良好。
This order shall be packed in cartons with polyethylene tops. 這批貨的包裝是用頂部帶有聚乙烯的紙箱。
It virtually consists of an empty chamber completely lined with polyethylene. 它實(shí)際是一臺(tái)完全用聚乙烯作襯里的空腔室。
