glassine造句

What is the difference between Glassine envelopes & BOPP polypropylene?
玻璃纸封套和 BOPP聚丙烯有什么不同?

Glassine: Tough but partially transparent paper used for protective wrapping and for overlays on artwork.
半透明纸: 结实而半透明的纸.作保护用的包装纸或作正稿的盖面纸.