| 摘要 |
The support comprises at least one bending element (20), at least two independent operating elements. The first and second operating elements engage, respectively, with the first and second parts of the bending element to create first and second curvatures. Plurality of supporting elements (30') are attached to at least one bending element. The supporting element comprises an intermediate part (31) connected to two bending elements and two lateral supporting areas (32) connected to corresponding bending element by means of an intermediate carrier (33). |
