摘要
近20年来,美国的门窗,从材料、品种、功能及其艺术造型等方面,都发生了很大变化。本文简要介绍了美国目前门窗所用材料的大致概况。
In the past 20 years, great changes have taken place for the doors and windows in America in terms of material, variety, function and art modeling. This article focuses on the materials for doors and windows in America.
