| 摘要 |
<p>A aSat wih a COntoured can OOwmpried of two conoavely soaped pads (14 ) adapted to support toe thighs of a user at an optimal selected angle of 27 degrees to te ho~rizontal pane. The O~omumnecd fectures enable a use tO bedrte seating position toat emUate he shp of the spine Woan standings.</p> |
