住在高楼的居民,往往为擦拭窗外玻璃面发愁。怎样能够既保证安全又能搞好窗户的清洁卫生呢?我们自制了一种简单的擦玻璃窗器。擦玻璃窗器采用上、下连杆连接做成,可以弯曲,顶端装上一块带槽的白铁皮片(采用木板也可),白铁皮 Residents living in high-rise buildings often worry about wiping the glass outside the windows. How can we both ensure safety and clean the windows? We have created a simple window cleaner. The window wiper is made of upper and lower connecting rods. It can be bent. The top is equipped with a grooved white iron sheet (with wood can also be used).