Abstract: External shutters have the excellent functions.They could effectively reduce the radiation heating of windows in summer and prevent the heat dispersed from windows in winter.

• 摘要： 外置百叶窗具有夏季有效减少窗口辐射得热而冬季有效减少窗口散热的卓越功能，其类型和适用的材料也丰富多彩。