| 摘要 |
<p>Support profile (1) of the tube type having external grooves for joining two covers (10, 11) provided with bulb strings (14, 15) which are welded along the joining areas of the covers, the external grooves (5, 6) of the support profile have an approximately S-shaped cross section (4) as the bulb strings (14, 15) of the covers are provided in the upper cavity (5) and the lower cavity (6) of the S-shaped cross section, respectively.</p> |
