| 摘要 |
<p>A double-glazing frame for doors, windows etc. comprises at least three panes of glass between which fresh air or air from the interior of the building is free to circulate. The frames surrounding the central and internal panes of glass are pref. movable either on hinges or are completely detachable. The air pref. circulates via restricted slots (4, 6) positioned at the top of the inner and outer panes and at the bottom of the central pane. The arrangement prevents the formation of condensation between adjacent glass panes.</p> |
