| 摘要 |
<p>The trailers for extensible caravans are built of a chain of standard units. These units move into position automatically and fold by a combination of hinged panels and a one-piece sliding assembly which forms a rigid positioning body. The rigid sliding assembly has the longitudinals and the transverse member forming a U, the sides of which overlap the sides of the trailer body by slideways with stops at both ends of travel. The hinged panels form the roof and floor after fitting to the rigid sliding assembly.</p> |
