| 摘要 |
<p>The carrier (7) has a central housing (11) formed by two rectangular plates separated by three longitudinal walls forming two central sheaths (14) and two peripheral grooves (15,16). Each central sheath accommodates a generally T-shaped transverse arm (17) including a longitudinal median branch (18) slidably mounted in the sheath. A transverse tubular portion (19) welded to a free end of the median branch, is extended in a plane of the central housing.</p> |
