1. A window in a vertically sliding frame is called a sash window: a single-hung sash has only one half that moves; in a double-hung sash, Both parts slide. 在窗框中上下滑动的窗，称为上下推拉窗，仅有一扇窗可滑动的称为单悬窗，两扇都能滑动的称为双悬窗。
2. on rollers window, among window sash's seal wool top should have the stop plate, this is on rollers window leak-proof quality key. 推拉窗、窗扇的密封毛条中间应有固定片，这是推拉窗密封性好坏的关键。
3. a strong cord connecting a sash weight to a sliding sash. 一条坚固的把一件饰带重物和一条滑动的饰带连结起来绳子。
4. a strong cord connecting a sash weight to a sliding sash. 一条坚固的把一件饰带重物和一条滑动的饰带连结起来绳子。
5. a strong cord connecting a sash weight to a sliding sash. 一条坚固的把一件饰带重物和一条滑动的饰带连结起来绳子。
