| 摘要 |
<p>The connecting device includes an outer tube (1), an inner tube (2), fitting at least partly into the outer tube, and movable relative to it to a lockable position, a connector to fix the two tubes together with several recesses or apertures (3) on the outside of the inner tube, and a locking bolt (4) movable on the outer tube. The connector has a shell (8) between the inner and outer tubes.</p> |
