| 摘要 |
<p>The device (10) has a caisson (11) formed of fixed and movable compartments, where the fixed compartment is fixed with respect to a vehicle. The movable compartment is movable with respect to the fixed compartment by a fastener so as o allow horizontal and vertical displacement of the movable compartment. The movable compartment is arranged above the fixed compartment in one position, and is placed at the side of the fixed compartment in another position such that top parts of the fixed and movable compartments form a plane surface.</p> |
