| 摘要 |
<p>An optical fibre cable comprising a generally non-metallic central core (21) encased in a rigid metallic tube (22), at least one layer of longitudinal strength members (6, 11) which, or the inner one of which, overlays and is in contact with the rigid metallic tube, and sheathing means (13) overlaying the strength member layer, the layer of strength members including, in a respective gap or gaps, at least one longitudinally-welded metallic tube (7) within which is encased at least one optical fibre (5).</p> |
