| 摘要 |
<p>The picture frame is one that can be assembled by the user and can be opened and closed to different size pictures. The rims of the frame are made of metal, a light alloy or synthetic material, and interlocked by angled pieces mounted at each end of the frame sections. Each angled piece is formed of a right angle with two arms, the free ends of which have a flexible edge which is bent at an angle of one hundred and eighty degrees and grips round the frame sections.</p> |
