double glazing unit

• 双层中空玻璃

double glazing unit的用法和样例：

例句

1. King of the construction of a new era, the small senior pre-sale is completed, we improve technical standards, will all become double at the glass window pane.
   我们建造的新时代景庭，小高层预售完毕后，我们提高技术标准，将窗玻璃全部改成双层中空玻璃。