| 摘要 |
<p>The protective sheath has at regular intervals (d) on its exterior surface a gap (14) whose width is greater than the gap width (10) between successive ribs (12) on the sheath wall. A fixing clip (20) associated with the sheath, has on its internal face (20), surrounding the sheath, a rib (26) which is designed to fit into the gap (14). <IMAGE></p> |
