| 摘要 |
<p>The panel or screen uses at least three types of extrusion (1,2,3). These form the uprights (1), cross-members and covering members (3) of a surrounding frame. The uprights are made from closed hollow extrusions, each with at least one channel (5) to receive the panel or screen, and with inner surfaces shaped to engage with the cross-members through bolts with their heads fitting into channels (6) in the uprights. The covering members are designed to cover an edge of the panel or screen and a portion of a cross-member to fix the panel or screen in place.</p> |
