| 摘要 |
<p>The seat (1) has a base (3) and a backrest (4) equipped with a rigid frame including two lateral support uprights (11, 12) and a non-deformable rigid shell (20) which is mounted on the uprights. The uprights are connected horizontally at their respective upper and lower ends by cross pieces (13, 14), where the uprights and the crosspieces have hollowed units. The shell forms the backrest structure and has a curved surface.</p> |
