| 摘要 |
<p>The bottom mounting (1) has a profile (2) with an upper (3) a lower (4) and inner (5) and an outer (6) side. A ratchet unit (12,13) is near the outer side (6), at the level of the upper side (3). The ratchet unit (12,13) has a space (13) with an opening (12). A further ratchet (14) is at the under side (4).</p> |
