| 摘要 |
<p>The window frame is formed of two parts, each of which has an internal flange for supporting the edge of a window pane. A spacer frame is positioned between the edges of the two panes and holds the oanes against the internal flanges of the frame. The spacer frame has two internal lips, the first of which supports one edge of a third panel positioned between the first two panes and the second of which carries moulded fasteners. The edge of the third pane is held against the mouldings on the side opposite the first internal lip.</p> |
