北方住宅通常采用开启双层木窗来通风、采光,但由于选料、制作、安装等多方面的原因,这种木窗有许多缺点:如密闭性差,在寒冷的冬天起不到很好的保温作用;尘土、水蒸汽易进入室内,带来经常擦玻璃的麻烦;采用玻璃油灰粘封玻璃与窗槽间的缝隙,这样做即费时间又 The northern residences usually use double-layered wooden windows for ventilation and lighting. However, due to many reasons such as selection of materials, production, and installation, such wooden windows have many shortcomings: if they are poorly sealed, they do not perform well in cold winter days. Insulation; dust, water vapor easily into the room, bringing the trouble of frequent wiping; use of glass putty to seal the gap between the glass and the window slot, this will take time