| 摘要 |
<p>Rung-type bars provide divisions in a window or glazed door. They are esp. made up from hollow plastics profile units, with a wing frame. Rungs running in one direction, at least, are in the form of ornamental rungs, lying against the pane of glass. Their ends engage recesses in the wing frame or in a real bar. Ornamental bars may consist of two separate cases, one lying against one side of the pane, and the other against the other. Their ends can have lengthways protruding lugs for recess engagement.</p> |
