| 摘要 |
<p>A frame is designed to be used with glass for photos, drawings, etchings, watercolours and similar. It is composed of a combination of straight sections forming the edges of the frame. They are assembled at their extremities by right angle L shape pieces each end fitting into one end of one of the straight frame sections. The right angle corner pieces have a smooth surfaced on the outside (17, 18, 19) and they have two protrusions acting as locks. The frame is easily and rapidly assembled.</p> |
